I'm feeding 8 oz bottles of formula w/5 tbsp of cereal for 7 mth old, is that too much?

I'm feeding 8 oz bottles of formula w/5 tbsp of cereal everytime my baby eats, which is every 3 hrs. She eats 4-5 times a day. Is that too much? I haven't started her on solid foods because everyone says the cereal is her solid food...is that too much to feed to her? Should I slack up on the cereal? She is 7 mths old by the way. Thanks.