My baby was two months yesterday and eats 5oz every 4 hours but she also sleeps 7-8 hours a night. She has been like this since she was about 4-5 weeks. The pedi said it was perfectly great since she is gaining weight and is hitting all her milestones and more and that I'm just one of the lucky ones that got a baby that sleeps through night. She pretty much just makes up for what she missed eating at night during the day. And she is growing like crazy she was 12lbs 8oz today.