[Ashley V]

I've been trying to change Chip and Smokey's food to NB Ultra Premium, and have been mixing it with the Nature's Recipe I was feeding before. I would like to change over to the organic because I've noticed that Chip may be allergic to something in ultra premium. I still have about 3 days worth of the nature's recipe... would that be enough to get their tummmies used to the NB organic, or should I just get another bag of nature's recipe and switch to the organic later? What about if I added some yogurt in with the organic for about a week? I don't have the money to buy both nature's recipe and organic right now.