Not finishing bottles

Did anyone notice their DC not drinking their whole bottle when they were growing? DS has been going to sleep around 9/9:30 and getting up around 5. When I give him his bottle he will only drink the first 4 oz and leave the last two. I don’t understand how he is not starving. Any thoughts as to what it could be?

Re: Not finishing bottles

Ryan does this alot> I think teething can cause their tummies to fill up on drool so they're not as hungry...and/or it hurts to suck for too long so they stop after they've had enough. He'll probably go back to finishing bottles after a while.