Tracking Twins: How to Log Two Babies' Feeds, Sleep and Nappies Without Mixing Them Up

A baby tracker for twins works when each baby has its own record and every feed, top-up and nappy goes against the right baby as it happens. Log a tandem feed as two entries, one per baby, each with the breast that baby fed from. Record the same fields for both twins, so you can compare the two records.

This guide draws on Australian twin-feeding advice from Pregnancy, Birth and Baby, the Australian Breastfeeding Association (ABA) and the Australian Multiple Birth Association (AMBA). It turns that advice into a record you can keep at 3am. It covers what to write down for each baby, how to log a tandem feed, and how to share the logging with a partner.

How do you track twins without mixing them up?

Give each twin a separate record and log against that baby straight after the feed or change. Records get mixed up when two babies share one list, or when entries are written from memory an hour later. Two separate records, the same fields for both, and logging on the spot keep each baby's day readable on its own.

Three habits do most of the work:

• One record per baby. A notebook with a column for each twin, or an app with a profile for each. Never one combined list.
• Log the baby in front of you, now. After a double feed, log both before you settle either. The second entry is the one that gets forgotten.
• Name the baby, not the order. "Twin A fed first" means nothing tomorrow. Use their names, or a colour that never changes (a blue bottle and a green bottle, for example).

What should you record for each twin?

Record the same seven things for each baby. The list puts Australian feeding guidance next to what it means when there are two babies.

• Feed time: Pregnancy, Birth and Baby says newborns getting enough milk feed at least 8 times in 24 hours. AMBA notes newborn multiples may each need 8 to 12 feeds a day, so count per baby, not per session.
• Breast and side: Pregnancy, Birth and Baby advises against giving each baby its own breast, and says to swap babies from one breast to the other at each feed.
• Top-up amount (mL): Supplement feeds of expressed milk or formula are sometimes needed when one twin is smaller or not gaining well. Ask how often, and log each baby's amount.
• Wet and dirty nappies: Nappies show what each baby took in. Soft, mustard-coloured poo is one of the signs of enough milk. Our wet nappy guide has the daily count.
• Sleep start and end: Pregnancy, Birth and Baby notes that sometimes one twin settles easily but the other does not. A separate sleep line for each baby shows which one is short on sleep.
• Weight at each check: Pregnancy, Birth and Baby says to check that each baby is putting on the right weight with your doctor, lactation consultant or child health nurse.
• Expressing sessions: If one or both twins are small or premature, the ABA notes you may need to express, and even small amounts of colostrum are valuable.

Add a note column for anything that changes the picture: a sleepy feed, a weak suck, a feed cut short. AMBA points out that twins can have different birth weights and different challenges with breastfeeding. That is why each baby needs a record of its own.

How do you log a tandem breastfeed?

Log a tandem feed as two entries with the same start time, one per baby, each with the breast that baby fed from. One entry for "both babies" loses the detail that matters most with twins: which baby was on which side.

AMBA says alternating the babies between sides helps keep your supply balanced. There are two ways to do it:

• Swap at every feed. Pregnancy, Birth and Baby advises swapping each baby to the other breast at each feed. It says this helps balance your milk production, especially if one baby has a much stronger suck.
• Swap each day. AMBA says alternating with each feed "can be difficult to track", and offers a simpler option: alternate sides each day.

Whichever you pick, write the side against each baby. Then the question at the next feed has an answer: "Ava was on the left last time, so she starts on the right."

You don't have to tandem feed at all. The ABA says feeding one baby at a time at first can help you learn how each baby latches, and it's fine to keep feeding separately.

AMBA adds that tandem feeding at home alone can be hard, because it needs pillows and support to position both babies. If you feed one after the other, log each feed as it finishes.

Pregnancy, Birth and Baby · Raising and feeding twins

Do not choose one breast for each baby. Babies will grow and develop better if they feed on both breasts.

Should twins feed on the same rhythm?

You can keep twins on the same rhythm by waking the second baby when the first wakes for a feed. Pregnancy, Birth and Baby suggests this to give you as much time as possible between feeds to rest. AMBA adds that many parents plan a shared schedule but find it isn't always possible, because twins often have different feeding habits.

Here is an example day, not a target. Ava feeds about every 3 hours and Leo about every 2.5 hours, and both feed at 6am.

Short gaps are gaps of an hour or less between feed starts. Night sessions are the ones after the 9pm feed and before 6am.

On demand, the two rhythms drift apart and meet only twice a day, at 6am and 9pm. Waking the second twin cuts the sessions from 16 to 10. The cost is that Ava is woken earlier than she would wake on her own.

A separate record for each baby is how you tell whether the shared rhythm suits both of them. Check each baby's line, not the combined total:

• Feeds: is each baby still getting at least 8 feeds in 24 hours?
• Nappies: are each baby's wet nappies holding steady?
• Weight: is each baby gaining at their checks?
• Feeds when woken: does the baby you wake feed well, or fall asleep at the breast?

If one twin starts to slip, show your child health nurse or lactation consultant both records.

Paper or app at 3am with two babies?

Both work if they hold the same fields for each baby. AMBA's list of equipment for breastfeeding multiples includes a notebook to keep track of feeds, especially in the newborn days. An app suits some families better once two adults are logging.

The app here is one with a profile for each baby.

The notebook's weak point with twins is the second adult. If your partner does half the night feeds, they need to see what you logged at 1am without waking you to ask.

Sharing the night: two adults logging either twin

With twins, whoever feeds a baby logs that baby. The next person to pick one up should be able to see, without asking, when that twin last fed, from which side, when it last slept and when it last had a wet nappy.

A few rules keep a shared record clean:

• Log the baby you fed, before you hand over. Do it before you put the baby down, not in the morning.
• Both adults log both babies. Splitting "your twin, my twin" falls apart the first night one baby needs both of you.
• Agree the side rule together. Every feed or every day, so the side record means the same thing to both of you.

Pregnancy, Birth and Baby says support matters for parents of twins, from your partner, family and professional organisations. Our guide to sharing baby tracking with your partner covers who logs and who only reads.

Safe sleep for twins

Red Nose says the safest way to sleep twins at home is each baby in their own cot, following the six safe sleep recommendations. The risk in a shared cot is one twin, or their bedding, covering the other's head and face.

If twins share a cot for a while, Red Nose advises:

• place the babies head to head, at opposite ends of the cot
• use no bedding
• never put them in the cot with other children
• move them to separate cots once they can move around the cot.

Pregnancy, Birth and Baby gives the same head-to-head advice. It suggests baby sleeping bags instead of sheets and blankets, or swaddling each baby separately.

When to call your nurse, GP or 000

With two babies it is easy to put a worry down to tiredness. Act on these for either twin:

• Fever under 3 months. The Royal Children's Hospital says a baby under three months with a fever above 38°C should see a doctor as soon as possible. Under one month old, go to a hospital.
• Call 000 if a baby is struggling to breathe, is blue or very pale, or you can't wake them.
• Fewer or drier wet nappies. Our dehydration red flags list the signs that mean seeing a doctor promptly.
• Refused feeds. Pregnancy, Birth and Baby says to see your doctor right away, or go to the nearest emergency department, if a baby has refused to drink anything for a few hours. It lists being sleepy, irritable or less active than usual among the signs of severe dehydration, which need 000 or emergency.
• Weight worries. Pregnancy, Birth and Baby says to talk to your doctor, lactation consultant or child health nurse if you have concerns.

The ABA's Breastfeeding Helpline runs 24/7 on 1800 686 268.

Setting up twins in BabyLog: two free accounts, or one Pro account

BabyLog keeps a separate record for each baby, so each twin has its own feeds, sides, top-ups, sleep and nappies. You switch babies by tapping the baby's name at the top of the screen. Each adult's screen stays on the baby they last picked.

There is no single entry for both babies and no side-by-side view. A tandem feed is two entries. Start a feed timer on one twin, switch, and start one on the other; each baby runs its own timer. Set Last side on each entry, because BabyLog records Left unless you change it.

On the free plan, one account can create one baby. That leaves two ways to set up twins.

Prices can change at any time. For current pricing, see BabyLog pricing.

With two free accounts, you are each an editor on the other's twin. With one Pro account, your partner joins both twins as an editor, and the account holder pays for Pro. The charted views are Summary, Calendar, Timeline and Compare: they go back 14 days on Free, and the Pro account gets the full history. The Pro account holder makes each baby's Checkup Report, and reminders are set for each baby.

Two free accounts. This route costs nothing, but the order matters. On Free, the one-baby count covers babies you edit as well as babies you create. The count never blocks an invite; it only stops you creating a second baby.

1. Start free and add one twin. Your partner signs up on their own account and adds the other twin.
2. Only then send each other an invite. Pick Editor, because invites default to Viewer.
3. Once you're both editors on both twins, either of you can log either baby.

Opening an invite before you have added your own twin uses up your free baby. So hold the invites until both twins are in.

One Pro account. One parent creates both twins and invites the other as an Editor on each. Your partner logs to both babies at no cost.

With BabyLog Pro, the account holder can also build a Checkup Report for each twin. Pick at least 7 days, and share it with your nurse or paediatrician through a private link and a six-digit code. If one twin is being watched more closely, the visit can focus on that baby.

Other trackers draw the line differently. Huckleberry's help centre, for example, says you can add as many children as you have to one account (checked September 2026). If you're comparing apps, our roundup of baby trackers in Australia sets out where BabyLog's free plan stops.

The sharing feature page shows how invites and roles work, and the pricing page has the full plan comparison.

BabyLog has no corrected-age setting. Ages and growth percentiles run from the birth date, so check a premature twin's progress against corrected age with your nurse or paediatrician.

Two babies means two records. Create your free account, add your twin and log the first feed tonight.

Common questions