So, when parents tell me they are having trouble getting their infant or toddler to sleep twelve hours at night (say, from 7:00 P.M. to 7:00 A.M.) along with two hours of napping, I have to tell them that fourteen hours of sleep in a day is not likely. We can adjust their child’s sleep so that he has an early bedtime or a late waking, I explain, but not both.

