I know that when changing types of food it is supposed to be done slowly mixing the two foods at varying amounts untill you're at 100% of the new food. But my question is, what if you're staying within the same brand but just switching flavors? I have been feeding Eagle Pack Hollistic for Large Breeds, and thought about switching possibly to either the Duck or Chicken formula, simply because the store is out of the Large breed formula. Since i'm staying within the same company would it be ok to switch "flavors" for say one bag, since i have no clue how long it'll be before they get the large breed back in and since i have maybe 2 days worth of food left in my existing bag? Thanks