My dd is 8wo and weighs 9lb 7oz. She's ff and has approx 22oz per day feeding on demand taking between 2 1/2 and 5oz per feed. She was 8lb when born and has dropped to between the 9th and 25th centile. Hv me worried sick that she isn't gaining enough weight and have had conflicting advice from different Hv's. Is she eating enough? Don't know what to do to get her to take more, she's alert and happy when awake and plenty of wet and dirty nappies. Any advice please?