I beleive you should look into getting milk raplacer to wet down the kibble with and/or to supplement this. Please don't rely on your vet for nutritional information, they know a lot of things but generally speakingmost don't know much of anything abou tnutrition. Puppy Chow is one of the worst foods out there. Not the worst but as far as nutrition content it is one of the worst. PLease reasearch other kibbles and try something like canidae, chicken soup, wellness, and some of the other high end foods. Your boy is very yougn and really needs better nutritional support. He can live on puppy chow, but it's not the bst thing for him especially seeing as how they didn't get the best nutrition from mom, they need the best they can get to help ensure healthier longer lives. Good luck.