Babies are a good guide to how much they need to eat so I would let her guide you and ensure you keep solids shortly after milk feeds with a good gap before the next one so she doesn't fill up and then decrease her milk intake as per PP. if I think it will impact on his next milk feed I also limit. My Ds is the same age and also eats loads. usually for dinner, though he will eat much less for breakfast especially and also for lunch. On a good day he will eat a quarter of chicken breast, quarter of a big potato, half a long carrot, 4 or 5 sprigs of broccoli and a whole yogurt, a strawberry and 3 grapes for dessert. As long as it is a balanced meal she is eating and not empty calories I think it is ok.