My LO is 6 months old and weighs 18.10 lbs. At his well baby checkup today, the pediatrician was concerned that his weight gain seems to have hit a plateau. He has always been in 75th percentile for weight but he has dropped down to the 55th percentile according to the growth chart she showed me. She wants me to start supplementing with formula and return for a weight check in 6 weeks. I work full time and pump every 3 hours while at work, otherwise he is breastfed. I would really like to avoid giving him formula if it is unneccesary. He has plenty of wet/poopy diapers. I did read online that it is common for breastfed babies to even out in their weight gain around his age. Is supplementing truly neccessary? Thanks for any help!!