The best way to judge the right amount of food to feed is by their poo and if they still have a waist or not. If their poo is runny or super soft then cut back a bit until it firms up as well as if they are losing their waist you cut back. All pups are different in the amounts they need based up on how active or inactive they are. Many people feel 1 cup 3 times a day until they are 6 months of age then cut back to 1 cup twice a day from there on. We have only fed 1 cup twice a day since we got our baby as anymore than that she has explosive poo, but she also gets several healthy treat like fruits and veggies throughout the day.