I wouldn't worry about not eating cereal at all. It's really a lot of empty calories. Rice cereal has no nutrition (other than the iron they've added) and tastes awful. She doesn't need baby food either, real food works fine. Really try not to make eating an issue, because you've got years of it ahead (oh the picky toddler years) and really you cannot make them eat if they don't want to. Why are you weighing her so much? Really stop measuring how much she is eating; clearly it will only stress you out. If you are concerned that she isn't gaining enough, give her more breastmilk. It has much more nutrition and the very important fats they need, than any food you could offer her. That (or formula) really is where they get most of their nutrition during the first year.
I didn't start giving my DD solid food until almost 10 months. At 10.5 months, she probably had a little avocado or a bit of banana per day, if anything at all. I never fed baby food or cereals (she didn't have a grain until 16 mos). She got real food and if she didn't want it, she had breast milk. Really you can relax about it, as others have said, they have growth spurts and she may be between spurts.
Has she had difficulty with weight thus far? Is it something the doc is concerned about? If not and if she is acting normally and peeing and pooping normally, she's probably fine. If you have the sense that something is really wrong, then just call the doc now and have her checked out so you can be sure. Try not to stress.