Diets & Exercise: Infant, Enfamil

Question Regarding Enfamil a R

I just started feeding my six month old Enfamil A R because she was spitting up quite frequently and I have a question whether I should still be supplementing with rice cereal being that this formula already has rice starch in the formula. Should I still be giving her rice cereal or oatmeal? I dont want her to gain unnecessary added weight due to extra cereal feedings. Any suggestions from mothers out there that feed their babies Enfamil A R? Thanks :)