Hi,
what you have here is a perfectly normal and well adjusted human baby. He was a fabuloius size boor - not small at all. You've got to turn it upside down. You have heaps of milk as evidenced by his growth. Having other children you know that they 'want, want want' in the afternoon- fruit, toast biscuits - they come home from school and kinder and want to snack continually. And they are irritable and bicker with each other (at least this goes o. In my family and most I know!). when your baby feels like this he seeks to feed/comfort himself at the breast. And of course if he feeds frequently your breasts feel emptier, but in fact they are making milk as quickly as ever - but he's just being a normal baby