I would like to give my german shepard a different food, I was thinking canidae or innova, he currently has pedigree dog food. He has been eating this food for 2 weeks and I want to switch but how should I introduce the new food? Should I add a little of the new stuff to his current food and increase the amount gradually? By gradually that means how much per day? Sorry if this seems stupid but I am not sure and dont want to upset his tummy..thank you for serious answers…..what are your opinions on the canidae and innova? Sorry if I didnt spell them right but you know what I mean.
yes I know pedigree sucks but thats what I have for now so dont rip on me ok?

kind of concerns me that the first two ingredients are sweet potatoes, and potatoes and the third and forth being fish and fish meal….however my dog is such a picky eater and i heard fish is good for picky eaters…despite that he does not want to eat this either…i want to kjonw if this is good enough for him? if it is i will just wait and let him get use to it or should i return it?