21 Month Old Sleep Schedule

Updated Sep 8th 2022 | timer 2  min read

21 Month Old Sleep Schedule

Written By Mandy Treeby Chief Baby Sleep Consultant

21-month-olds have typically “learned the ropes” of sleeping, but sometimes there are still a few hiccups, like stalling before bed. This can leave parents or caretakers with some questions. One popular query we get: “How much should my 21-month-old nap?”

Well, we’re here to help by answering that and other common questions, including “Is there a 21-month sleep regression?”

A Sample 21-Month-Old’s Sleep Schedule:

The times listed here are just an example. Every baby’s unique, including your own, so when creating their schedule, pay more attention to wake windows and sleepy cues than clock time.

As a reminder:

  • Wake windows are the amount of time your baby is awake between sleeps.
  • Sleepy cues are the signs your baby’s tired, like yawning.

By aligning wake windows and sleepy cues, you’re shaping your baby’s natural sleep rhythm to optimize their rest and development for years to come.

Sample Sleep Schedule for 21-Month-Olds with 1 Nap:

“Good morning!” 7:00 AM
Nap 1 12:15-2:15 PM Awake: 5 hrs. 15 mins.

Nap: 2 hrs.

Bedtime Routine 7:15 PM
“Good night!” 8:00 PM Awake: 5 hrs. 45 mins.

Q: Can a 21-month-old baby sleep through the night?

Yes. A 21-month-old who’s gone through sleep coaching can sleep from “good night” to “good morning!”

For more information on sleep coaching, consider downloading the Smart Sleep Coach by Pampers™ . It’s designed by experts and powered by AI to help any parents teach any baby how to sleep well - and fast!

Q: How Many Total Hours Should a 21-Month-Old Sleep Each Day?

Ideally your 20-month-old is sleeping at least 12.5 hours over a 24-hour period.

Q: How much nighttime sleep for a 21-month-old?

About 11 hours of sleep each night is a good goal for a 21-month-old.

Q: How much daytime sleep for a 21-month-old?

1.5-2.5 during one nap.

Note: While some babies may resist a nap at this age, it’s important to keep them napping until they’re at least 3-years-old. Read more about nap transitions in our article on when to initiate them and why.

Q: What is a 21-month-old’s wake window?

Five hours and 15 minutes to 5 hours and 45 minutes is a good wake window for 21-month-olds.

Q: Is there a 21-month-old regression?

Technically there’s not a 21-month-old regression, though some may still be experiencing their 18-month regression, which can last 2-6 weeks. Rest assured this is temporary, though.

Note on Teething: There may still be a bit of discomfort on that front, which can make sleeping difficult for babies. Cold berries or teething rings can help here.

Read our piece on sleep regressions for more information on when they happen and why - they’re fascinating!