Hi Guys, thanks for your replies

It's good to know that the leg thrashing thing is pretty normal. Sherie, Charli does it a lot from about 4am onwards too.

I'll just keep offering Charli a little food every now and then til she gets used to it. I'm glad it's not a big deal if she doesn't take to it straight away. It's hard because whenever we go visit my nan and aunties I always get an ear bashing about the fact that she's not on solids yet - you know, the "we used to feed babies solids from 3 months in my day and it didn't do them any harm" "she's probably hungry" yada yada ya.
In reality she's clearly not hungry or malnourished. She's a little buddah! 9kgs and 69cm long and she's not even 6 months yet and she has 4-5 feeds of 200ml of karicare per day, which is obviously enough for her!