The toddler years, explained
Sleep regressions, tantrums, first sentences, nap math — whatever your toddler is doing this week, there's an entry for it. Written by an early-childhood educator and mom, so you can look it up, take a breath, and know what to do next.
Look it up by age
Entries for any age, 12–36 monthsStart here · most-consulted entry
18 Month Sleep Regression: Signs, Causes & What to Do
What the 18 month sleep regression is, why it hits so hard, how long it typically lasts, and the calm, consistent steps that get everyone sleeping again.
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12–17 months
13 entries
- Crawling, Cruising and 2am: When Movement Breaks SleepSleep9–18 months
- 12 Month Old Sleep Schedule: Naps, Meals & BedtimeSchedules by Age11–13 months
- 12 Month Sleep Regression: The Toddlerhood OpenerSleep11–14 months
- 13 Month Old Schedule: A Realistic Full DaySchedules by Age12–14 months
- The 2-to-1 Nap Transition: Timing & SurvivalSleep12–18 months
- Weaning Off the Bedtime Bottle: A Gentle 12–18 Month PlanEating12–18 months
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- When to Drop to One Nap: Signs & a One-Week PlanSleep12–18 months
- 14 Month Old Schedule (With Nap Transition Notes)Schedules by Age13–15 months
- 15 Month Old Milestones: What Most Toddlers DoDevelopment & Speech14–16 months
- 15 Month Old Schedule: One Nap or Two?Schedules by Age14–16 months
- 15 Month Sleep Regression: Why It Hits and What HelpsSleep14–16 months
- 16 Month Old Schedule: Settling Into One NapSchedules by Age15–17 months
- 17 Month Old Sleep Schedule: One Nap, Meals & BedtimeSchedules by Age16–18 months
18–23 months
9 entries
- 18 Month Old Fighting Sleep: Defiance or Regression?Sleep15–21 months
- 18 Month Sleep Regression: Signs, Causes & What to DoSleep15–21 months
- 18 Month Old Sleep Schedule: Naps & Wake WindowsSleep16–20 months
- How Many Words Should an 18 Month Old Say?Development & Speech16–20 months
- 18 Month Old Milestones: The Full ChecklistDevelopment & Speech17–19 months
- 18 Month Old Schedule: A Realistic Full DaySchedules by Age17–20 months
2 years
16 entries
- Parallel Play: What It Is and When It StartsDevelopment & Speech15 months–3 years
- Autism and Toddler Sleep: Routines, Senses and SettlingSleep18 months–3 years
- Late Talker or Speech Delay? How to TellDevelopment & Speech18–36 months
- Toddler Bedtime Stalling: Why One More Never EndsSleep18–36 months
- Toddler Climbing Out of the Crib: Safe Next StepsSleep18 months–3 years
- Toddler Fear of the Dark: Why It Starts and What HelpsSleep18–36 months
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- Toddler Opening the Bedroom Door: What It MeansSleep18–36 months
- Toddler Stuttering: What's Normal and When to WorryDevelopment & Speech18 months–3 years
- Toddler-Proof Bedroom: Contain a Climber SafelySleep18 months–3 years
- Potty Training Readiness: What's Actually DevelopingDevelopment & Speech18–40 months
- 2 Year Old Speech: What's Typical, What to WatchDevelopment & Speech22–26 months
- 2 Year Old Sleep Regression: Why It Hits & What to DoSleep22–30 months
- 2 Year Old Tantrums: Why They Peak & What HelpsBehavior & Tantrums22–36 months
- 2 Year Old Milestones: Speech, Motor & SocialDevelopment & Speech23–27 months
- 2 Year Old Not Talking: What to Check and Who to CallDevelopment & Speech24–30 months
- 2 Year Old Sleep Schedule: Naps, Meals & a Full DaySchedules by Age24–30 months
2½ years
10 entries
- The First Night in a Toddler Bed: What to ExpectSleep18 months–3.5 years
- Toddler at Your Bedside at 5am: The Silent EscapeSleep18 months–3.5 years
- Toddler Night Terrors: What They Are and What to DoSleep18 months–4 years
- Toddler's First Pillow: When They're Ready and What ChangesSleep2–3 years
- Crib to Toddler Bed: When & How to Make the MoveSleep2–3.5 years
- Potty Training and Night Sleep: What ChangesSleep2–3.5 years
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3 years and up
11 entries
- Toddler Imaginary Friend at Bedtime: Ritual or Stall?Development & Speech2–4 years
- Toddler Stopped Napping Too Soon: What to Do NowSleep2–4 years
- Ice Skating With a Toddler: Readiness, Safety and BedtimeDevelopment & Speech2–5 years
- When Do Toddlers Stop Napping? Signs It's TimeSleep2.5–4 years
- 3 Year Old Milestones: What Comes Together NowDevelopment & Speech35–40 months
- 3 Year Old Schedule: With or Without the NapSchedules by Age36–41 months
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- 3 Year Old Tantrums: Why They Change and What HelpsBehavior & Tantrums3–4 years
- Preschooler Says "I'm Not Tired" at Bedtime: What It MeansSleep3–4 years
- The Threenager Stage: Why Three Can Be Harder Than TwoBehavior & Tantrums3–4 years
- Growing Pains at Night: When Leg Aches Wake Your ChildSleep3–6 years
- 3.5 Year Old Schedule: Life After NapsSchedules by Age42–47 months
Any age
12–36 months · 33 entries
Sleep
- A Toddler Bedtime Routine That Actually Sticks
- Best Toddler Sleep Apps and Programs for 2026
- Betteroo for Toddlers: Sleep Help Past the Baby Years
- Cough and Cold Medicine for Toddlers: What to Skip at Night
- New Medication and Toddler Sleep: What to Ask the Doctor
- Sleep Regression vs Teething, Growth Spurts & Skills
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- The No-Nap Day: A Survival Plan for Everyone
- Toddler Chewing the Crib Rail: Molars, Covers and What Helps
- Toddler Grinding Teeth at Night: What It Means
- Toddler Needs to Hold Your Hand to Fall Asleep? What Helps
- Toddler Refusing Naps: Strike or Really Done?
- Toddler Sleep With Hearing Aids or a Cochlear Implant
- Toddler Wakes When the Hall Light Goes Off: Why and What to Do
- Toddler Wakes When the Toilet Flushes: Why and What Helps
- Toddler Waking Too Early: How to Fix 5am
- Toddler Waking Up at Night: Causes by Age
- When a Toddler Needs Less Sleep Than the Chart Says
Behavior & Tantrums
- Tantrum or Meltdown? The Difference That Matters
- The Toddler Hitting Phase: What's Normal, What Helps
- Toddler Biting: Why It Happens & How to Stop It
- Toddler Breath-Holding Spells: A Calm Explainer
- Toddler Separation Anxiety: What It Is and When It Peaks
- Why Toddlers Have Tantrums (And What They Mean)
- Why Toddlers Throw Everything (Schemas, Explained)
Development & Speech
Eating
Look it up by subject
- Sleep 44 entries
Toddler sleep from 12 to 36 months — regressions, nap transitions, bedtime battles, early rising, and the move from crib to big-kid bed.
- Behavior & Tantrums 10 entries
Why toddlers melt down, hit, bite and refuse — what's developmentally normal at each age, plus calm scripts for the hardest moments.
- Development & Speech 18 entries
Milestones and language, age by age — what most toddlers do when, what's within the normal range, and when to check in with your pediatrician.
- Schedules by Age 14 entries
Realistic daily schedules from 12 months to age three — wake windows, nap timing, meals and play, with a template for every age in between.
- Eating 6 entries
Picky phases, thrown plates, milk math and tiny appetites — what toddler eating really looks like and how to keep mealtimes low-drama.
Latest entries
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Toddler Imaginary Friend at Bedtime: Ritual or Stall? Development & Speech · November 7, 2026 -
Ice Skating With a Toddler: Readiness, Safety and Bedtime Development & Speech · November 3, 2026 -
Toddler Wakes When the Toilet Flushes: Why and What Helps Sleep · October 31, 2026 -
Preschooler Says "I'm Not Tired" at Bedtime: What It Means Sleep · October 27, 2026
Compiled by
Camille Ortega
I'm Camille — early-childhood educator turned home reference desk. I spent eleven years in toddler and preschool classrooms before having two of my own (currently a threenager and a five-year-old), and Toddler Topics is the encyclopedia I always wished I could hand parents at pickup: what's developmentally normal, what to actually do about it, and when it's worth a chat with your pediatrician. Nothing here is medical advice — it's a well-organized head start for that conversation.
More about Camille and this site