My pup is 11 weeks old... Ive had him for about a month now... I weened him off the foodsotre puppy food from the breeder and started him on Innova... it's a hollistic on that the local pet store graciously let me sample... He was fine with it for a while and now seems uninterested. Barely ever finishes. He is only getting fed 3/4 cup... 3X daily... He is a rottie... and the food is a large breed food as well... I have been mixing in chk broth. Should I try a new food?