I think (depending on how often she is having a bottle) you give them solids at like, an hour or hour and a half after their bottle. I would never stop half way through as milk is still their most important "food" at the moment until they are one.
As for when you increase it - I'm sure she will let you know if she is hungry for more!!
I can't help much more, I've forgotten most of it from when DS started solids, and I did BLS with DD so didn't do cereal and stuff.
I think just once a day and see how it goes from there. Miss M had three meals a day from the very beginning, but she was experimenting with food, not actually eating it, so she wasn't filling up on it first
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