He could just be going through a growth spurt and needing to eat more for a little while.
Ur welcome as long as dr dont seen worried and hes keeping it down he should be fine but u could also try putting a lil rice cereal in his milk I ended up having to do that with my last baby bc formula alone would not fill her up but dr just told me not to do it unless she had some neck control and count balance her head somewhat steady which she did that at hospital also
No he does not spit up.. Thanks :)
As l ok ng as hes not spitting it back up and keeping it down I wouldn't worry my second baby left the hospital drinking 3 1/2 - 4 ounces every 4-5 hours and they didnt seem worried