Is it the calcium you are worried about? I would seriously consider ringing one of the bfing helplines, just to put your mind at rest, but if you are concerned about calcium, there is no harm in giving her more calcium rich foods.
Sardines and salmon are good ones and there is a list here of some more calcium rich foods.
Other things like Ready Brek, are fortified with calcium and you get to make it up with milk too .
Thanks for your replies. She took 5oz this morning just to confuse things, so maybe she is just getting used to the bottle. We're doing mostly finger foods and she eats all sorts of things including pasta, toast, cheese, fish, chicken & beef. Probably not enough veg but I will rectify that. I'll add some yogurt or fromage frais in so hopefully that will cover all bases.
If you are worried about how much milk she is having, the current advice is to offer milk (bf or formula) about an hour before offering solids between 6 and 12 months. Is that what you are doing currently?
DD2 is 8 months old and was bf until about a month ago. She now has breastmilk at 7am, 7pm and once in the night and 2 bottles in the day but she only drinks about 3oz from each bottle. She eats solids well and drinks some water with meals. If she won't take more formula, what extra stuff should I be giving her to eat? Is it just more dairy stuff or does she need particular vitamins or other nutrients that bf and ff provide?