Preschool sleep: 3–5 years

Most kids drop the nap between 3 and 5 years^[1]. The signs of readiness: refusing to nap consistently for 2+ weeks, not visibly cranky in the late afternoon on no-nap days, and nighttime sleep staying solid (no early waking, no harder bedtime).

Drop the nap gradually rather than abruptly. A common pattern: alternate nap and no-nap days for a few weeks. On no-nap days, replace the nap slot with quiet rest time — same room, dim light, books or audio stories, no demands. This preserves the wind-down ritual without forcing sleep.

The first weeks after dropping the nap usually need an earlier bedtime — 7 PM instead of 7:30 — to compensate for the lost daytime sleep. After 4-6 weeks, kids settle into the new total sleep pattern and bedtime can drift back to its previous time.

Around 3-5 years, imagination kicks into high gear and bedtime fears intensify. Monsters under the bed, fear of the dark, fear of being alone, fear of bad dreams. This is developmentally normal^[2] — the same imagination that produces creative play also produces vivid worry.

The standard approach: validate without reinforcing. "I see you're scared. The shadow on the wall is the chair. We can leave the door open and the hallway light on." Avoid two extremes: dismissing the fear ("there's nothing there") which makes the child feel unheard, and elaborating it ("let's check the closet for monsters") which confirms the fear is reasonable.

Tools that help: a dim warm-color nightlight, a "monster spray" (water in a bottle, sprayed at bedtime), a stuffed animal positioned as a defender, predictable books that resolve the fear narrative (Where the Wild Things Are normalizes the fear-then-resolution arc). Most fears peak at 4 years and fade by 6.

By preschool, bedtime routine should be structured but flexible — 30-45 minutes, same general order, with room for the child to participate^[3]. A typical sequence: dinner → bath (every other night by this age) → PJs and brushing teeth → 2-3 books → song or quiet talk → lights out.

Independent reading time can join the routine around 4-5 years if reading is starting. The child reads (or "reads") in bed for 10-15 minutes, then lights out. This builds a positive association with bed-as-calming-place and supports literacy.

What pushes routines off track at this age: late-day sugar (especially the 4 PM cookie), screens within 60 minutes of bedtime (blue light + cognitive activation both fight sleep onset^[4]), and inconsistent bedtimes that swing more than 30 minutes night-to-night. The single highest-leverage change for most preschoolers is locking the bedtime to a 30-minute window.

Bedtime resistance: most often caused by overtiredness or by an inconsistent endpoint. The fix is an earlier bedtime + a clear "no negotiation after lights out" rule. Two-choice authority works at this age: "Do you want one book or two?" The choice creates buy-in without dilution of the structure.

Night wakings: less frequent at this age. When they happen, it's usually a bad dream, a need for water, or a need for the bathroom. Quick brief response, return to bed, no extended interaction. If wakings cluster around 2-3 AM and child is hard to settle, look at total daytime sleep — overtiredness causes more night waking, not less.

Early waking (5 AM): usually means bedtime is too early or napping has crept back in. By preschool, most kids do better on a later bedtime + no nap than on an earlier bedtime + nap.

Sleepwalking and night terrors: peak at this age^[5]. Both are non-REM phenomena, scary for parents, harmless for the child. Don't wake the child; ensure safety; let the episode pass. Recurrent nightly episodes warrant a pediatric sleep consult.

The kindergarten transition (typically age 5) often forces a schedule reset. School start times require fixed early wake-ups (often 6:30 AM), which means bedtime needs to settle around 7:30-8 PM to hit the 11-13 hour total sleep target^[1].

Start the schedule shift 2-3 weeks before school starts. Move bedtime 15 minutes earlier each week, move wake time 15 minutes earlier each week, until you're at the school-day schedule. Don't try to do it abruptly the night before school starts.

Sleep-deprived kids in kindergarten show as behavioural problems, attention problems, and emotional reactivity — not as visible tiredness. If your kindergartener is having a hard time, the first thing to audit is total nightly sleep against the 10-13 hour target. Adding 30-60 minutes of sleep often resolves what looks like a behavioural issue.