So, baby boy is 3 weeks and a day old today. He drinks 4 oz of a bottle, and then about 30 minutes after he finishes it, he acts like he's hungry again. Change diaper, give him pacifier, how we is still restless and showing hunger cues. So I cave, and give him 2 more oz. He only drinks about an ounce to an ounce and a half... sometimes all 2. Then he falls asleep and he is content. Repeat this for the next feeding.

Is this a growth spurt or should I be making 5 oz bottles??? I'm worried it would be too much for him since he isn't even a month old yet, and all the literature and people around me are saying the 4 oz he drinks is too much as it is.