Parents often ask whether their baby is sleeping too much or too little. For infants under six months, the answer is usually that both the low end and high end of typical sleep are within a wide range of normal. What matters most is not the number of hours but the context: is the baby feeding well, gaining weight, and developing age-appropriately?
Healthbooq provides evidence-based guidance on infant sleep norms and development.
Sleep Norms by Age (Under 6 Months)
Newborn (0–4 weeks): 14–20 hours per 24-hour period- Night sleep: 8–10 hours (in 2–4-hour stretches)
- Day sleep: 6–8 hours (4–6 naps)
- Night sleep may produce one longer stretch of 3–5 hours
- Day sleep: 3–5 naps; each 30–120 minutes
- Night sleep begins consolidating; 2–3 night wakings typical
- Day sleep: 3–4 naps
- First extended night stretches appear (5–8 hours) for some babies
- Day sleep: transitioning toward 3 naps, each 1–2 hours
Why Sleep Totals Decrease Slightly With Age
As the brain matures, the proportion of active (REM-like) sleep decreases and consolidated quiet sleep increases. Overall sleep totals reduce because active sleep — which requires more waking from shorter cycles — is less frequent. The baby is not sleeping "less" because they need less rest; the sleep is becoming more efficient.
Signs That Sleep Might Be Insufficient
- Consistently showing overtiredness cues (fussiness, difficulty settling) before adequate wake windows have been reached
- Poor feeding
- Unusual irritability during waking periods
- Falling asleep immediately at feeds
Signs That Sleep Might Indicate a Concern
A baby who is consistently very difficult to wake for feeds and showing poor weight gain should be seen by a health professional, regardless of total sleep hours.
Key Takeaways
Sleep needs decrease slightly across the first six months as the baby develops, but remain high — most infants need 14–17 hours total per 24-hour period. Both too little and too much sleep relative to the norm can occasionally signal underlying issues, but the individual variation among healthy infants is large enough that only persistent extreme outliers warrant concern. Weight gain, feeding, development, and overall demeanour are more reliable indicators of wellbeing than sleep duration alone.
