I was feeding my bottle babies every 3 hours, and they'd eat approximately 1 ounce each at every feeding. So that was 8 ounces a day, approximately... sometimes they'd eat a little more, sometimes a little less. I've only had them since Sunday, but just today they've becoming extremely demanding. Now they scream to eat every 2 hours (sometimes less) and are eating 2 ounces each per feeding. I'm already going to have to go get another can of KMR because it's a half empty and I just opened it yesterday (the woman that was feeding them before gave me what she had left which held me over until then. They're gaining weight well (obviously!). Does anyone think maybe something is wrong and we need a trip to the vet or are they just becoming spoiled and demanding? And should I give in to their cries to eat every 1 1/2-2 hours?