Sleeping development

• back to sleep, through first year of life, especially in first 6 mos
• 90% of babies sleep through night (6-8 hrs) by 3 mos. And obviously won't need to eat during this time, usually when they weigh 12-13 pounds, so larger babies may begin sleeping through the night even earlier than 3 mos. However, most children swing back and forth, sleeping fine for weeks or months, then returning abruptly to a late night wakeup schedule, usually related to growth spurts increasing the need for food (Feeding spurts), or teething or developmental changes.

• neurologic maturation accounts for consolidating sleep periods into longer blocks
• by 2 months of age: wakes 2-3 times per night, some sleeping 6 hours or more