My little girl was born weighing 3.2kg and now at 6 months weighs 7.9kg and is 68cm long. She was breastfed for 3 and a half months and then changed to lactose free formula. Since then she has gained 2kg in 2 and a half months, and has gone from the 25th percentile to around the 75th (although her length has also gone from the 25th percentile to around the 50th). Do you think this is too much of a weight gain? She has been having approximately 5 bottles of 180ml formula a day and has just been started on solids this week, so I don't think she overeats. My GP didn't seem too concerned. Should I try and cut down her formula a bit?