I only use this method - 2 scoope milk powder, then one scoope of rice cereal replace one scoope of milk powder to make 6 oz of milk for my son before sleep each night. Just ensure that he is full and have a longer sleep and stop when he is 6 month old.
Don't put rice cereal into milk bottle for baby. He have to learn how to eat with spoon and bowl other than milk bottle.