Keep things familiar
If possible, have your child stay in his own home with someone he knows well -- grandparents, a caregiver. If he has to be away from home, don't separate him from his siblings, and make sure he has his favorite blankie. Routine is especially important for younger babies, notes Donna Holloran, owner of Babygroup, Inc., a Santa Monica, California, center that helps parents interact with their young children. Since a 4-month-old is too young to comprehend why Mom isn't with him, the most you can do is keep his daily routine the same.