© 2012 – 2022 Gwen Dewar, Ph.D., all rights reserved #author-byline-block_ee9c9722bcb302343ba6bfeb8a16fbe9 .author-byline-text{ font-size: 16px; color: rgb(34, 34, 34); } A baby sleep chart can’t tell you exactly how long your baby needs to sleep. Researchers don’t fully understand baby sleep patterns, let alone baby sleep requirements. But researchers have collected information from parents...