My daughter is 5 weeks 4 days and the past couple days and nights she seems to be sleeping longer stretches. She eats 4 oz every 4 hours but lately shes been more interested in sleeping instead of eating. Is this normal? If I try to feed her while she's sleeping she won't eat. I'm so afraid that she's gonna be hungry, but every one seems to say that she'll "let me know" if she's hungry. Any one else's 5 week old trying to sleep through the night and trying to go more than 4 hours without eating?