Are you sure she's worked it out right, Olivia is teeny weeny (Amy would confirm that like) and she has always been on the 50th percentile line up until recently when shes dropped slightly,
You post got me interested so I thought i'd have a look through her red book and see what weight olivia was around the same age.
I had olivia weighed on 10.06.2008 So Olivia would have been just over 6 months and she weighed 15lb14oz which is less than your little one but the marker is on the 50th percentile line.
Then on 22.07.2008 I had her weighed again and she was 17lb8oz and again the marker is on the 50th line.
The last time that i had her weighed before this week was 18.11.2008 and she was 19lb4oz which she was only just under the 50th line. I just had her weighed this week and shes 19lb9oz and shes now on the 25th. Even though her weight has dropped im not worried. Im gona try and give olivia more diary things like cheese etc to try and bulk her food up abit to try and get her to put a little bit of weight on but im not worried.
Perhaps you could try giving your little one things like cheese in mash, potatoe is a good food as again its quite bulky, if you dont think shes ready for lumpy food have you concidered the pasta stars, They are only very small and if you use more puree than pasta then i dont think it would be too lumpy.
I wouldnt worry or panic too much. Perhaps its just her build, I can 100% say Olivia is not malnourished no matter what the HVs think. Shes always been a wee little dote. Shes tiny, im putting it down to her build, her fathers the same.
Maybe take her to a diff baby clinic and get her weighed as olivia was lighter than that at her age but marked on the 50th
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