I'm still feeding my dogs nutro natural choice, but I got some innova today. At the moment, Tips is at 1 1/4 cup of nutro a day, and Boris at 6ish. With Innova, it's going to be 1/2 cup and 2 1/3. So, I have two questions : First, I'm thinking of starting mixing them now, and just pitch whatever nutro is left when I am done, but I'm not too sure how to do it. I've read I need to feed 90% of the old food and 10% of the new one the first day, then 80/20 etc... is that right? Wouldn't that be too fast? When I changed Boris' food when I got him he got diarrhea, so I guess I did it too fast. Also, I'm worried that as innova's proportions are 1/2 of nutro's, it's going to be a real mess to get it right. Second, they currently have their own food each, but with Innova they will have the same food. Should I still feed them separetely or together? I'm worried that if I don't separate them Boris will eat everything or Tips will eat more than his share. For now they usually only eat until they are not hungry anymore of their own food, but will gobble up the other dog's food if they get the opportunity... Any advice is welcome!