S.K.
as long as he is growing and thriving don't force him to eat more than he wants to. If he is going to fall asleep he will just wake back up to eat again later. My kids never ate more than 4 ounces at a time most were about 3 but they would eat more often than normal. As they got bigger they still didn't drink any more than 6 ounces but they got the recommended ounces per day in. Listen to his queues he will let you know when he is content. Eating til content is better than over eating and creating a unhealthy habit from the start.