My lo's on his 3rd month now and is on EBF. I feed on demand (even force feed), no pacifiers or bottles. I've read that babies at this age should have their weight doubled. Lo was born at 3kgs but last pedia visit he only weighs 5.6kgs. He is an active baby, now crawls, can roll over from tummy to back, is very talkative (coos), follows/can recognize my voice and can sit with support. Is there any way I can do to help increase his weight? Thanks!