Across this site, I mention age a lot in terms of when a baby might sleep through the night. Sometimes age relates to how long a baby might need to eat at night. But, premature development might change the way you approach your baby's sleep. How Does Being Premature Affect Your Baby's Development? According to HealthDay News and the magazine, Pediatrics, even babies born just 2 to 3 weeks early can be developmentally delayed. The risk is small for any ONE child, but as a group, even babies