Becky-that depends on your dog, and what you are going to and from. I don’t mix at all when going from one to another, but if your dog is on a lower quality moving to a higher quality, the richness will probably screw with their stomachs. One of mine has a bit of a sensitive stomach, and he gets digestive enzymes for the first few meals, and the girls it doesn’t bother at all.
As far as how much and how often, it again depends on what you’re feeding for how much, and how old they are for how often. I feed twice a day, but if they are a puppy under 6 months, that isn’t the case
