But because I'm a new mommy and worry about everything, I'm kinda worried that this will lead to her not gaining weight. Doesn't she need to eat to gain weight? If she's not eating for 7 hour stretches, is that good for her at this age? I'm going to ask her pedi on Tuesday at her weight check. He'll probably roll his eyes and say it's fine (as long as she IS gaining weight). But I'm asking anyways.