I really couldn't say, deancey... Aadi feeds every 3 hours roughly, days and some nights too! It's on demand, but quite regular. I would think it could possibly be some other cause if Liam's grumpy, screaming and refusing boobies! It might just be a phase, and I wouldn't stress about it unless he's sick and/or dehydrated. Keep an eye on how many wet nappies he has, and if you're worried maybe call MCH nurse?