My baby used to be a very ferocious eater. He would scream if you took the bottle away and he was eating 5oz every 2 to 3 hours. The past week he has become much less interested in eating. He will only eat about 4 oz every 4 hours. It is normal for baby's appetite to fluctuate? He is not running a fever...
5oz every 2-3 hours is a lot for a young baby (a lot for any baby, really). What he is eating nowand how often sounds a lot more normal for a formula fed baby. But since it is a change, I'd go ahead and call the ped and see what their thoughts are. Is he still pooping and peeing enough?
He might becoming more aware of his surroundings. My daughter eats 4 oz when she takes a bottle so I'm assuming a similar amount when she nurses (7-8x a day, with 2 4-8 hour stretches).
DD1 July 2008 (41w3d)
November 2010 (13 weeks)
DD2 August 2011 (33w5d)
Kesler is always hungry lol!!! probably why he is gaining so much he cant go more than 2 hrs in between feeding and even then screams like we are starving him,. hehe he has earned his name porkchop
if your concerned it wont hurt to call your ped at the very least it will ease your concern.