It’s 3:40 in the morning. The baby is finally asleep on your chest, and you wonder: when did they last eat? Was it 1:30? Or was that the diaper?

You’re running on very little sleep, and everyone from the hospital nurse to your aunt wants to know how the feeding is going.

You don’t need to record everything. A few things are worth writing down in the first weeks, and plenty of others can go unlogged. This post sorts out which is which.

Why bother logging at all?

Mostly because your memory isn’t at its best right now. That’s not a character flaw. It’s what happens when you sleep in short pieces.

A simple log does two jobs. At home, it settles the “when was the last one?” question without a debate at 3 a.m. At the doctor’s office, it turns “I think she eats a lot?” into something your pediatrician can work with.

Babies usually see the pediatrician early. The American Academy of Pediatrics has a first-week checkup checklist for a visit at 3 to 5 days old, where the doctor weighs and measures your baby and asks how feeding is going. “How many diapers should I be changing?” is right there on its list of questions parents ask. A few days of notes make that easier to answer.

Feeds: the one worth tracking

For how amounts change after the first weeks, see the baby feeding schedule by age.

If you track one thing, make it feeds. Newborns eat often, and the pattern is easy to lose. If you share feeds with a partner, this guide to sharing night feeds shows how a written log helps.

Major health organizations give these typical numbers:

The CDC says a breastfed baby will breastfeed about 8 to 12 times in 24 hours.
The AAP says breastfed newborns usually nurse about every 2 hours, so 10 to 12 sessions in 24 hours is the norm.
For bottle-fed newborns, the same AAP page says most eat every 2 to 3 hours, with 8 feeds generally recommended as the minimum per 24 hours.

Those are ranges, not targets. The AAP also says that, in general, babies should be fed whenever they seem hungry. Early hunger cues it lists include licking lips, rooting (turning the head and mouth as if searching for the breast) and putting a hand to the mouth.

What’s useful to note for each feed:

The start time
Breast or bottle, and which side if you’re nursing
Roughly how much, if it’s a bottle

If you pump, the date on each bag matters more than any log. See how to store breast milk for how long it keeps.

The start time does most of the work. It hints at when the next feed is coming and adds up to a daily count you can share with your pediatrician. If you have questions about how often or how much, the AAP says to talk with your pediatrician.

Diapers: the part you can see

You can’t see how much milk goes into a breastfed baby. You can see what comes out, which is why wet and dirty diapers are one of the most practical things to count in the first weeks.

The NHS gives a rough guide for breastfed babies, and the AAP’s numbers are similar:

Baby’s age	Wet diapers per 24 hours	Poops per 24 hours
First 48 hours	Often only 2 or 3	-
From day 4	-	At least 2 soft, yellow ones a day, for the first few weeks
From day 5 onwards	At least 6 heavy, wet ones	Still at least 2 soft, yellow ones a day

The AAP puts it as 2 to 3 wet diapers a day in the first few days, then at least 5 to 6 a day after the first 4 to 5 days.

A tip from the NHS if you’re squinting at a modern disposable diaper wondering whether it counts: pour 2 to 4 tablespoons of water into a clean diaper to get a feel for what “wet” looks and feels like.

You don’t need a detailed description of every diaper. “Wet” or “dirty” (or both) with a time is plenty. If the counts worry you, the NHS advice is to ask for help early, and your pediatrician or a lactation consultant is the right person to ask.

Sleep: log it loosely

When naps start to form a pattern, our nap schedule by age shows what usually comes next.

Newborn sleep is all over the place, and that’s normal. The NHS says that most newborns are asleep more than they are awake, that total daily sleep varies but can be around 18 hours, and that babies wake at night because they need to be fed.

For a broader range, the CDC lists 14 to 17 hours of sleep a day for newborns aged 0 to 3 months.

Sleep varies a lot. The NHS says your baby will have their own pattern of waking and sleeping, and it’s unlikely to match other babies you know. So in the newborn weeks, sleep logging is more about noticing a rough rhythm than hitting a number.

If you log sleep, rough start and end times are enough. Nobody needs to know that Tuesday’s nap ran 47 minutes instead of 52. Our guide on how much sleep a baby needs by age puts the CDC, AAP, NHS and AASM numbers side by side.

Weight: leave it to the checkups

Weight matters, but it isn’t really a home-logging job in the newborn weeks.

Some things worth knowing, from the AAP’s page on your baby’s first month:

All newborns lose weight during the first 7 days.
From about 5 days old, they should start gaining steadily.
By about 2 weeks, they should be back at their birth weight, and almost all babies are by 3 weeks.
The average newborn gains almost an ounce (28 grams) a day.

The NHS says babies are weighed during their first 2 weeks to check they’re regaining their birth weight, and after that recommends weighing no more than once a month up to 6 months, unless you ask or there’s a concern about health or growth.

So the only weight to log is the number the doctor gives you at each visit.

What you can skip

Some things feel important at 3 a.m. and don’t matter much. Unless your pediatrician asks you to track them, you can let these go:

Feeds down to the exact minute. The start time is the useful part.
Detailed nap-by-nap sleep analysis. Newborn sleep doesn’t follow a schedule yet.
Weighing at home. Leave it to the checkups.
Comparing your log with a friend’s baby, or with an app’s “average”. Babies vary a lot.
Fields you don’t need. If a field doesn’t help you or your doctor, it’s just more tapping.

And if a day goes unlogged because everyone was too tired, that’s fine. A log with gaps still beats no log, and nobody is grading it.

When to call the doctor

A log can show you patterns, but making sense of them is your pediatrician’s job. If something feels off, call. You know your baby better than any chart does.

The AAP is clear on one point: if your baby is younger than 3 months and has a temperature of 100.4°F (38.0°C) or higher, contact your pediatrician right away.

Bringing your notes to the pediatrician

Before each visit, glance back over the last few days and jot down the items below. Our checkup preparation list covers the rest of the visit.

Start with:

About how many feeds a day
About how many wet and dirty diapers a day
Anything that changed or surprised you
Your questions, written down before you forget them in the waiting room

A pen and paper on the fridge work fine for all of this. If you’d rather use your phone, there’s Vivi Baby, an iPhone and Apple Watch tracker with one-tap logging for feeds, sleep, diapers and pumping, a “time since last feed” view, and a Checkups feature that summarizes the weeks before a visit and keeps your list of questions. Your data stays in your own iCloud Drive. You can see how feeding works on the Apple Watch or follow the step-by-step guide to tracking feeds with an Apple Watch. Get Vivi Baby on the App Store.

Whatever you use, keep it simple and sleep when you can.

Sources

How Much and How Often to Breastfeed - CDC
How Often and How Much Should Your Baby Eat? - American Academy of Pediatrics (HealthyChildren.org)
Breastfeeding: is my baby getting enough milk? - NHS
Helping your baby to sleep - NHS
About Sleep - CDC
Your Baby’s First Month: Growth & Physical Appearance - American Academy of Pediatrics (HealthyChildren.org)
Your baby’s weight and height - NHS
1st Week Checkup Checklist: 3 to 5 days old - American Academy of Pediatrics (HealthyChildren.org)
Fever: When to Call the Pediatrician - American Academy of Pediatrics (HealthyChildren.org)

What to Track in the Newborn Weeks