for example, the two category-killer sleep books: Ferber (Solve Your Child’s Sleep Problems) and Weissbluth (Healthy Sleep Habits, Happy Child). Both provide some guidance on the amount you should expect your child to sleep. The trouble is, they do not agree. Ferber, for instance, says that at six months, a baby should sleep a total of about 13 hours: 9.25 hours at night, and two 1- to 2-hour naps. Weissbluth suggests this same six-month-old should sleep a total of about 14 hours, but with more of those hours falling at night: 12 hours at night, and two 1-hour naps. This is a 3-hour difference
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