My 2mth old son can get pretty hungry between his feedings, but I know he wont eat a whole bottle until ...?

My daughter was like this. she was always hungry but she also had reflux soo she didnt hold much down. My dr. told me to add a tsp. of infant rice per 2 ounces of formula to her bottles and she started to stay full. I had reservations about doing it at first bc i had heard of choking hazards and obesity but she is doing great. perfect in weight and hasnt choked on it once