Hi I hope someone can advise me! My lo was 9lb at birth and was on the 91st centile. anyway long story short the last couple of times I have had her weighed she has dropped down to the 50th centile. However she is constantly gaining weight and is now 12lb 9 1/2 onz.She is a very happy baby and feeds well during the day and wakes up for one feed at night so I thought I was doing ok, but the HV says when she sees me next I might have to think about topping her up with formula ( which I really did not want to do ) She also told me that all there scales were condemmed about a month ago as they were weighing wrong! Is it normal for babies to drop in centiles and what I dont understand is how can she be gaining weight but dropping in centiles? Im in such a muddle and keep thinking perhaps Im not doing right for her and should switch to formula, hope someone can help x