I have been battling my child being "underweight" since his 4 month check-up. He is now 9 mos and is in the bottom 5%. He is completely breastfed with him just in the last week starting eating solids (he would have nothing to do with them). He nurses at will and I am a stay at home mom. He is VERY active and just started taking steps by himself in the last week. The doctor said today it is time to start formula to get his weight up. I have tried nursing him and then trying to feed him formula once before and all he did was spit it up and make him super gassy. It was a miserable experience. He seems very happy and healthy but just doesn't make the "charts." I will try anything but formula is my LAST RESORT. HELP! SUGGESTIONS PLEASE!!