How much should i feed(bottle fed)formula,rice cereal him?

Remember his number one source of nutrition should still be formula at this age-around 24 oz or more per day. The food is just for practice, don't feel like you have to do too much. I usually give my 6 month old cereal in the morning and a bit of vegetables at night, and she drinks abourt 4 6 oz. bottles. Also remember to try one single ingredient food at a time for 3 days before introducing a new one to make sure there are no food allergies. Good Luck and hoped this helped.