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Improve baby sleep - Wake window by age
How long your child can comfortably stay awake. Get this wrong and everything else gets harder.
Start here
Whatever is happening with sleep right now, there is a reason for it, and there is a next step. Start with the thing that is actually happening tonight.
Where most parents start
What is happening right now?
Pick the one that sounds most like your night. You do not need to know the cause to find the right page.
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Sleep got worse overnight
"Everything was working. What did I do wrong?"
Sleep regressions -
We are up every one to two hours
"Is this normal? Will it ever stop?"
Frequent night wakes -
Naps last 30 minutes
"Is my baby overtired, or undertired?"
Lengthening short naps -
Wide awake at 5am
"Is this just my life now?"
Early morning wakings -
Bedtime is a battle
"Why is this so hard now?"
Bedtime routines -
Something feels off, I cannot say what
"Is this a phase? Teething? A leap?"
Development and sleep
Or browse by stage
How old is your child?
Sleep needs change more in the first three years than at any other point in life. Everything written for your child's stage, in one place.
The foundation
If you only read three things
Read in this order. Most of what goes wrong at night traces back to one of these three.
You did not cause this
Babies and toddlers are supposed to wake at night. Sleep falls apart around new skills, new teeth and new fears, and it puts itself back together again. Almost nothing on this site is about fixing your child. It is about understanding what stage they are in, and what actually helps while it passes.
Who writes this
Why you can trust it
Written by a specialist
Mellow Kids was founded by Daiany Nascimento, a Certified Pediatric Sleep Specialist.
Clinically reviewed
Guidance is reviewed by a pediatric nurse before it is published.
No one method
We do not sell a single approach. We explain what the evidence says and let you choose. Read our editorial policy
Tools and guides
Get something specific to your child
Articles explain the pattern. These are built around your own child: their age, their temperament, their stage.
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Sleep schedule generator
Enter your child's age and wake time. Get wake windows, nap times and a bedtime for today.
Create your schedule -
Temperament assessment
Two children the same age need different things. Find out which strategies suit yours.
Start the assessment -
The Peaceful Sleeper series
Gentle, science-based books covering birth to 24 months, taken one stage at a time.
Shop the book series
The Mellow Kids app
Everything on this page is written for parents in general. The app is written for your child. It follows their age day by day, tells you what is coming before it arrives, and adjusts the plan as they grow.
Get it on the App StoreFree on the App Store. For birth to 24 months.
- Knows what is coming Anticipates more than 80 developmental and sleep changes, so a rough week is expected rather than a mystery.
- A schedule that keeps up Wake windows and naps shift automatically as your child grows. No recalculating every few weeks.
- Feeds and diapers in one place Track the day without a second app, and see how it lines up with how they slept.
Would rather look around on your own?