Toddler Sleep Regressions: 18 Months & 2 Years | Parenting Hub
Toddler sleep often gets harder around 18 months and 2 years. Big developmental and emotional leaps are behind it — here's how to ride them.
Two later sleep waves — around 18 months and 2 years — catch many parents by surprise. Language, independence and big fears are usually behind them.
The 18-month wave
- Language explosion + first big 'no'
- Separation anxiety returns
- Molars and 2-year molars start to push through
- Toddler now has the will to resist bedtime
The 2-year wave
- Imagination develops — first real fears (dark, monsters)
- Drop to 1 nap fully consolidated
- Often coincides with potty training or a new sibling
- May start climbing out of the cot
What helps
- Hold the routine — same order, same time, every night
- Big focused 1:1 connection in the day
- Validate fears: night light, dream spray, 'monster check'
- Avoid starting new things mid-regression (new bed, room move)
- Two clear choices at bedtime (pyjamas, book) — gives autonomy without losing the boundary
When to seek help
- Significant developmental regression alongside sleep change — see GP
- Loud snoring or stop-breathing pauses
- Persistent night terrors or self-harm during sleep
Common questions
Should I move my toddler to a bed?
Usually not in the middle of a regression. Only move when safety requires it (climbing out repeatedly), and after age 2.5–3 ideally.