Yes, sleep needs and nap transitions can shift significantly around 7 months of age. While many babies are on a three-nap schedule, some may naturally extend their wake windows and move toward two naps as they grow. If your baby is suddenly staying awake for longer periods (3.5 to 4.5 hours) and refusing that third nap, it is likely a normal developmental change. Follow your baby's lead while ensuring they aren't becoming overtired.