Any advice please? My thirteen week old hasn't gained any weight in three weeks. She has actually lost 2 ounces. We haven't been too concerned, as she seems lively, happy and alert. But this morning she is noticeably thinner for the first time. On Friday I took her to the health visitor clinic, and they've asked for weekly weighing, and a GP appointment. The GP just wanted to monitor for a week. I feed at least five times a day. Each feed lasts from 15 mins to an hour. (I can hear glugging). I have loads of milk and I bf my last two for a year each. They also dropped off their centile but were back on their centile by about 2 yrs, but for different reasons (difficulty latching on - DC1 and illness - DC2). DC3 has been doing brilliantly up til now. Was 12'3 at 10 weeks. I don't want to formula feed. But dont know what else to do.