By around 16 weeks, sleep duration typically is what?

• A. 6-8 hours
• B. 8-10 hours
• C. 10-12 hours
• D. 12-14 hours

Answer: (C)

Around four months, babies start to settle into a more regular sleep-wake rhythm, with longer blocks at night and a few daytime naps. This combination yields a moderate total amount of sleep over a 24-hour day. It reflects the typical shift from the more variable newborn pattern toward a steadier schedule, though individual variation exists and some babies may sleep a bit more or less. The main idea is the move toward longer nighttime sleep paired with daytime naps, giving a middle-range daily sleep amount for this age.