Am looking for some advice for my worried friend. Her 12 week old breastfed baby has put on under 3 pounds since she was born. some weeks she has lost weight. She didnt have this problem with her first baby - in fact quite the opposite - and she breastfed for 10 months with no probs. She really wants to exclusively breastfeed but her health visitor has adviced giving the baby formula to get her weight up. Not sure if this sounds right? could there be a reason why baby isnt putting on weight. the baby is being sick after a feed - do you think this has anything to do with it or could the baby not be latched on properly? really want to help her out as she is so worried about her. Luckily i never had this problem as DS1 put on so much weight from my milk.