My baby is currently 5 weeks old and she's feeding every 1 - 2 hours during the day. Over the past couple of days I've been lucky if she gets to the 2 hour mark before crying for more. Sometimes she doesn't even finish the bottle and could drink anything from 1oz to the full 4oz.
At night though (after being put to bed) she's started going a few hours, sometimes 4, before wanting her top up.
On top of that, she's barely sleeping in the daytime, just a few power naps here and there...What age do babies start going longer than two hours?