My doberman just made a yr old February 16th. I currently have him on Victor (ocean fish) however I occasionally alternate between Victor and Purina Pro Plan for sensitive stomach Large Breed Puppy. I feed him the recommended amount on the bag, however I only feed him once a day and occasionally add a raw egg. His vet told me to feed him twice a day and just split the recommended amount but splitting it seems like he's not getting enough. Any suggestions?