Hi, Each of our dogs have been changed to a 2x @ day schedule in 3-4 months. It depends on how fast they are growing and handling the food. Just like with people, smaller amounts more often is better. Switching to a 2x@ day will mean BIGGER amounts at each feeding to have enough calories, which mean more food at once. bigger bellies, and more stool volume. the longer you can wait, the better, even up to 4-6 months. If you have to only do 2x @ day, allow plenty of bathroom time after eating and for the next hours. Pupppies need Lots of breaks.