Most new parents comment on the sleep deprivation that goes along with having a newborn baby. As a sleep consultant for over 10 years, a common question is when do babies start sleeping through the night? The short answer is babies start sleeping through the night more regularly around 6 months old. Some formula-fed babies will sleep through the night as early as 4 to 6 months old while some breastfed babies will sleep through the night around 6 to 9 months old. This article will share more