My son is 5 months and 16lbs. He gets a bottle of breastmilk two or three times a week. I leave a 6-7 oz bottle, assuming there will be an ounce left just in case I'm late getting home and he needs to be held over. Well he's been polishing off the whole bottle in 20 minutes. My mother in law keeps saying he's still hungry which I doubt. The other day I thawed 8 oz and told her he wouldn't take the whole thing....well she said he did and was still hungry. I think he just likes to suck and if there's a bottle in his mouth he'll keep going. He didn't throw up though and ate 2.5 hours later. He's nursing 8 times a day between 630am and 8pm which an occasional 4am feed. On the breast he's done in 5-10 mins. How much should he be consuming at each feed?