The Complete Baby & Toddler Sleep Guide (0–5 Years)
Everything you need to know, stage by stage — in one place
If you've ever Googled "baby won't sleep" at 3am, you'll know how overwhelming the advice out there can be.
Some sites tell you to sleep train at 4 months. Others say never let them cry. Some swear by strict schedules. Others say throw the schedule out entirely.
No wonder it feels confusing.
I've spent over 30 years working with babies and toddlers — as a mum of five, a primary school teacher, and an infant sleep coach. And here's what I've learned:
There's no single "right" way. But there are age-appropriate truths that make every stage easier.
This guide brings together everything I know about sleep from newborn to age five — in one place, broken down by stage, so you can find exactly what you need for where you are right now.
How to Use This Guide
Sleep needs (and sleep challenges) shift dramatically as your child grows.
What works for a newborn won't work for a toddler. What worked for your first baby might not work for your second.
This guide is organised by age, with a detailed post for each stage if you want to go deeper. Jump to whichever section matches where you are right now.
0–6 Months: Building Foundations
The phase: Survival, connection, and learning who this tiny person is.
Newborns don't sleep "well" or "badly" — they sleep the way newborns sleep. In short, unpredictable bursts, almost always needing you nearby.
What matters most at this stage:
Learning the difference between tired cues and overstimulation
Creating a simple day/night difference
Starting a mini bedtime signal (even just nappy, feed, cuddle, bed)
Safe sleep, every time
Responding to your baby without guilt
Realistic expectations:
0–3 months: 14–17 hours total sleep, wake windows of 45 minutes–1 hour
3–6 months: 12–15 hours total sleep, wake windows of 1.5–2 hours
Your job right now isn't to create a perfect sleeper. It's to survive, rest when you can, and trust that this phase is temporary.
Read the full guide: 0-6 Months: Building Sleep Foundations
6–12 Months: Teaching Self-Settling
The phase: Your baby's brain has developed enough to start learning to fall asleep with less help from you.
This is when sleep strategies actually start to work — not because your baby is "better behaved," but because they're developmentally ready to practise.
What matters most at this stage:
A solid, predictable bedtime routine
The Confident, Calm, Connected method — staying close while gradually building independence
Watching wake windows (2–3.5 hours depending on age)
Deciding whether to keep or gently reduce night feeds
A note on timing: there's no single right age to start. Most babies are developmentally ready from around six months — but readiness isn't just about your baby. You need to feel ready too. Some parents start closer to four or five months. Others wait until seven or eight. Some choose not to pursue self-settling at all. There's no deadline you're missing — what matters is starting when it feels calm and confident for both of you.
The approach I use is called the Confident, Calm, Connected method, and it has two gentle directions within it. The Gradual Fade slowly reduces your support step by step. Stay and Reassure keeps you right beside your baby while they fall asleep, gradually creating distance over time. Both stay completely connected throughout — your baby is never left to figure it out alone.
Progress isn't linear. Teething, growth spurts, and developmental leaps will all temporarily disrupt things. But over weeks, the pattern shifts.
Read the full guide: 6-12 Months: Teaching Self-Settling
12–24 Months: When Bedtime Becomes Optional
The phase: Your baby becomes a toddler — and suddenly bedtime is a negotiation.
Climbing out of the cot. Endless requests for water. Sudden fears of the dark. This is toddlers testing boundaries — it's their job, not a personal attack on your evenings.
What matters most at this stage:
Holding boundaries calmly and consistently
Offering limited choices so they feel some control
Using the same bedtime order every night
Telling genuine fear apart from stalling tactics
Navigating the (often messy) transition from two naps to one
The nap transition: Most toddlers drop to one nap around 15–18 months. Expect a few messy weeks where some days need two short naps and others need one long one. It settles.
Read the full guide: 12-24 Months: When Your Toddler Decides Bedtime is Optional
2–5 Years: Big Beds, Big Feelings
The phase: Your child can now talk their way out of almost anything — including sleep.
"I need water." "I'm scared." "One more story." "I love you so much I don't want you to leave." Preschoolers are master negotiators, and bedtime is their favourite arena.
What matters most at this stage:
Not rushing the cot-to-bed transition (wait until at least 2.5–3 years if possible)
Setting limits before the routine begins, not once they're already pushing
Validating genuine fears while still holding the boundary
Knowing whether to keep or drop the nap (most drop between 3–4 years)
Staying calm through the big emotions bedtime often brings up
What good sleep looks like: 10–13 hours total, bedtime 6:30–8pm, settling independently within 10–20 minutes.
Read the full guide: 2-5 Years: Big Beds, Big Feelings, and Bedtime Battles
Common Challenges at Every Age
Sleep Regressions
What we call "regressions" are actually periods of rapid brain development. Your baby isn't going backwards — they're leaping forward.
The big ones happen around 4 months, 8–10 months, 12 months, and 18 months. Most last 2–6 weeks. Staying calm and consistent through them is what gets you to the other side fastest.
Read more: When Sleep Suddenly Falls Apart (Sleep Regressions Explained)
One Bad Night
Even with the best routines, some nights just go wrong. Teething, growth spurts, a bad dream, or simply no reason at all.
One bad night doesn't undo your progress. Watch for patterns over a week, not isolated incidents over a single night.
Read more: One Bad Night Doesn't Undo Your Progress
When You Can't Put Them Down
If your baby won't be put down without tears, you're not spoiling them. Holding your baby builds security, trust, and confidence — it will never create a "clingy" adult.
This is a season. And what you give your child now, you'll see reflected as they grow.
Read more: When You Just Can't Put Them Down
Bedtime Routines Full of Tears
If bedtime itself feels like the battle — before you even get to sleep — a calm, predictable routine is often the missing piece.
Read more: When Your Bedtime Routine Is Full of Tears
Baby & Toddler Sleep Needs at a Glance
Age Total Sleep Wake Windows Naps
0–3months 14–17hrs 45–60min 4–6+
4–6months 12–15 hrs 1.5–2 hrs 3–4
6–12months 11–14 hrs 2–3 hrs 2–3
12–18months 11–14 hrs 3–4+ hrs 1–2
18m–3years 11–14hrs 4–6 hrs 1
3–5years 10–13 hrs All day 0–1
Remember: these are averages, not rules. Use them as a guide, then adjust based on your own child's cues.
A Note on Schedules vs. Responsiveness
You'll hear two camps argued passionately: children need a schedule vs. children need response and nurture.
Both are right.
Schedules help you organise your day, notice changes in behaviour, and spot when sleep needs adjusting. But they don't mean ignoring your child's cues. You still watch for the signals — and let those signals shape the schedule, not the other way around.
Structure gives your child safety and predictability. Responsiveness gives them trust and connection. You don't have to choose. You can offer both.
Read more: Baby Sleep Schedule by Age
What Stays True at Every Age
Across every single stage — newborn to preschooler — a few things never change:
Kids are people too.
They have off days, growth spurts, fears, and developmental leaps that disrupt sleep for reasons that have nothing to do with your parenting.
Calm consistency works better than perfect technique.
Your child feels your energy. Staying calm and predictable matters more than getting every single step exactly "right."
One bad night, one hard week, one tricky stage — none of it undoes your progress.
You're not starting over. You're moving through.
You cannot spoil a baby by meeting their needs.
Responding to your child — at every age — builds the security and confidence that becomes who they are.
You Know Your Child Best
Every child in this guide — every age, every stage, every challenge — is based on real experience raising five very different children.
What worked for one of mine sometimes didn't work for the next. And that's true for you too.
Use this guide as a framework, not a rulebook.
Trust your instincts. Watch your child's cues. Adjust as you go.
And know that wherever you are right now — newborn fog, toddler boundary-testing, or preschooler negotiations — this stage will pass, and you're doing better than you think.
Need more support at your child's current stage?
📖 Download my Free Sleep Signals Guide — Learn to spot tired cues before your child becomes overtired
🌙 Get my Confident Sleep Guide — Step-by-step, gentle strategies for every age and stage
💬 Need personalised support? Message me on WhatsApp
You don't have to figure this out alone. 💙
All Sleep Guides in This Series:
About Christina
I'm Christina, mum of five (now aged 16–22), infant sleep coach, primary school teacher, and class leader for Tots Play developmental classes in Peterhead, Aberdeenshire.
With over 30 years of hands-on experience with babies and toddlers, I help exhausted parents navigate every stage of sleep — from newborn fog to preschooler negotiations — with realistic, compassionate, judgment-free support.
I've lived every single stage in this guide. Five times. Every child taught me something different. I hope this guide helps you the way thirty years of bedtimes have taught me.