I’ve mentioned it earlier, but there’s one sure-fire method that every breeder and experienced pet parent uses to get their dogs to swap from one food source to another and that is through gradual introduction. In essence, you’ll be tricking your dog into slowly adapting to the new stuff by mixing it in with his old kibble and gradually increasing the ratios to favor the new food. This is done until it eliminates the old one entirely, at which point you would’ve conditioned your dog to the new stuff.