Sleep regression is a common phenomenon experienced by babies and toddlers. It refers to a period when a child who was previously sleeping well suddenly starts waking up frequently during the night and/or resisting sleep at bedtime. Though it can be frustrating for parents, sleep regression is a normal part of a child's development. It's often triggered by a growth spurt, developmental leap, illness, or changes in routine. Understanding sleep regression can help parents navigate this phase and make adjustments to their child's sleep habits. By being patient and consistent, parents can help their child get back on track with healthy sleep patterns.