My daughter is 3 months 12.5 lbs. and eats 4oz every 3 hours

@lolita1514, i give my son 4 oz every 2-3 hours but he has now started holding off for about 4 hours before he cries he sleeps after eating not sure if its okay but he does

No that's fine, after a feeding and you burp him if he spits up then it was to much

I usually give him around 4-5 oz every 3-4hours. @missnaty i jusy wanted make sure i wasnt giving him too much

At 2 months my kids were drinking about 6-7 oz lol it all depends what your baby can eat everyone gives their baby's different amounts but if your baby spits up after a feeding then you are giving to much