““Sleep cycles are shorter for babies than for adults, with more light than deep sleep. Babies have more vulnerable periods for night waking than adults; they have difficulty getting back to sleep. The medical definition of “sleeping through the night” is a five-hour stretch. Babies usually awaken two or three times a night from birth to six months, once or twice from six months to one year, and may awaken once a night from one to two years.* Some will wake more. Babies usually sleep fourteen to eighteen hours a day from birth to six months, fourteen to sixteen hours from three to six months, and twelve to fourteen hours from six months to two years. Babies’ sleep habits are more determined by individual temperaments than parents’ nighttime abilities. It’s not your fault baby wakes up. Stuffing babies with solids at bedtime rarely helps them sleep longer. It’s all right to sleep with baby in your bed. In fact, sharing sleep works better than other””
