When do babies drop to two naps? How to see it in your baby's sleep log

Two things change together. The American Academy of Sleep Medicine, with the AAP's endorsement, recommends 12 to 16 hours of sleep per 24 hours, including naps, for babies from 4 to 12 months. That total stays in the same range for months. Meanwhile the time a baby can comfortably stay awake grows. The wake-window table Baton uses, from Cleveland Clinic, gives 1 hour 15 minutes to 2 hours 30 minutes at 3 to 5 months, 2 to 4 hours at 5 to 7 months, 2 hours 30 minutes to 4 hours 30 minutes at 7 to 10 months and 3 to 6 hours at 10 to 12 months.

A day is only so long. As the stretches between sleeps get longer and night sleep consolidates, fewer naps fit into the daytime. That is all a “nap transition” is: the same sleep, in fewer and longer pieces. The tables are typical ranges, not rules, and other tables differ by a few minutes.

Not one that a public health source gives. If you read “6 months” on one site and “9 months” on another, both are summaries of what many families report, not a medical standard. Some babies keep a short last nap for a long time, and some drop it early, then come back to it for a week during a cold.

So use age as a rough background and your baby's own log as the evidence. The log is also what you would bring to your pediatrician if you want advice.

For one to two weeks, so that one odd day does not mislead you, note for each day:

• How many naps there were, and the start time and length of each.
• The time your baby woke in the morning, and the time they fell asleep for the night.
• Which nap, if any, was refused, cut short, or needed a long time to start.
• Anything unusual: a vaccination, a cold, teething, a trip, a new daycare day.

Two times per sleep are enough: fell asleep and woke up. Everything else you can work out later.

Sleep-coach sites often list the same signs, and a log lets you check them against facts instead of impressions:

• One nap is refused or skipped on most days of the week, not on one or two.
• The gap between the last nap and bedtime has grown, and bedtime has slid later.
• Naps are getting shorter while the baby is awake longer between them.
• Night sleep starts later or the morning waking is earlier than it used to be.

Two warnings. First, none of these proves the baby is ready; teething, illness, a growth spurt or a sleep regression can produce the same picture for a few days, and a log across a week or two helps you tell them apart. Second, a rough week is not a reason to change anything by itself. If you want to change the schedule, ask your pediatrician what is right for your baby.

Tap Sleep when your baby falls asleep and tap it again when they wake. If you forget to press start, you can begin the timer 5, 10, 15 or 30 minutes ago, and every time can be edited afterwards.

To count the naps, open the History tab and tap the Sleep filter. It lists every sleep, grouped by day, with its start and end times, so the naps of one day are a short list you can count. Baton does not show a nap count as a number, and the Sleep per day chart shows total minutes, so count the sleeps in History.

In Charts, Today shows a timeline strip with the day's sleep blocks, and a Sleep card that adds up the time into naps and night, next to a Longest sleep tile. The 7 days view shows sleep per day as night and nap bars. Baton counts a sleep as night if it starts between 19:00 and 05:59 and as a nap otherwise, so a sleep that begins at 18:30 is counted as a nap. The 7 days view is free; 30- and 90-day trends are part of Baton Plus.

The Today screen has an Awake card with how long your baby has been awake, which is the number to compare with the table. Baton Plus adds a Next nap window card that uses the same table, narrowed to your baby's own pattern after 7 days of logged sleep; it covers the first 12 months only. It is a suggestion from published ranges, not advice. If your partner uses Baton through their own iCloud account, they see the same sleeps, and CSV export of every entry is free if you want to put the numbers in a spreadsheet.

The AAP's safe-sleep basics apply to every nap, in every schedule: baby on their back, on a firm, flat surface made for babies, with nothing soft in the sleep space. A baby who falls asleep in a car seat, stroller or swing for part of a nap is not on a flat surface, so move them to a safe sleep space once you can.

Ask your pediatrician or health visitor if your baby seems unusually hard to wake, is feeding poorly, sleeps much less or more than you expected, has a fever, or if anything about their sleep worries you. You do not need a log to justify a call. When you do go, a week or two of sleep times turns “the naps are a mess” into something specific. In an emergency, call your local emergency number.