My bf ds is 17 weeks and weighs 15lb 13oz, which is perfectly normal for his age, I know. Thing is he's slowed down considerably on his weight gain, which has coincided with a load of difficulties we've bee having with feeding, and I was worried that the slowing down may be a sign that he's not putting on enough weight. Over a period of 3 weeks, between 14 and 17 weeks, he only put on 13 oz, which I have been led to believe is not very much. Just how much is a 'normal' weekly weight gain for a bf baby of this age?