Breaking the Cycle: How to Spot and Fix a Sleep Debt

When a baby misses out on their required rest, they don't just get tired — they accumulate a "sleep debt" that makes subsequent sleep even harder to achieve.

When an infant builds up a sleep deficit, their body begins to overproduce stress hormones like cortisol and adrenaline to keep them awake. This hormonal surge puts them into a state of fight-or-flight, commonly known as being "overtired." An overtired baby will fight sleep aggressively, cry hysterically at bedtime, and experience frequent nighttime awakenings or early morning wake-ups. Breaking this cycle requires proactive intervention. Moving bedtime forward by 30 to 60 minutes gives your baby a chance to fall asleep before that evening cortisol spike hits. Protect their daytime naps fiercely during a sleep debt recovery period, and prioritize a calm, extended wind-down routine to signal to their nervous system that it is safe to rest.