I feed butterworms as a treat. Depending on the size of the butterworm and the size of your frog, you have to guess I think. I usualy give 1 butterworm per animal every or alternate feeding. The smaler pacs get the smallest worms. I feed my frogs on alternate days and they are doing fine. But most people on the forum suggest you feed your baby frog 5 to 7 times a week. Mine won't eat every day, exept the Fantasy's as they are almost always hungry and so also are much bigger then the cramwelli's I bougth a week later.