Ah blondes that's an amazing story ! Have you been a step mum to them a long time ?
I also just started straight on veg , my DD seemed like she was rejecting it all for the first two weeks then realised she likes it haha. I only use baby rice to bulk up veg sometimes and I do give organix porridge in the morning . She's much happier now she's on food.
I haven't given fruit many times as I want her to be well established on veg / savoury .
She is still waking up in the night though as she has been for 3 weeks now . She has 7oz then goes back down !