4moms Goodnight Sleep TrainerOne of the biggest challenges you have to face as a new parent is getting your baby to sleep through the night. The process of sleep training involves maintaining a balance between letting the child cry - so they learn how to soothe themselves to sleep, and providing comfort so the child gets parental support.Train your four-month old to sleep through the night. Sleep experts have written dozens of books that detail proven methods to help your child sleep through the