Ok I think you should just feed him dog food. Here is my advice and I hope it helps.
1. KAWU: Stop the KAWU. If his ears haven't stood up by the time he was a much much younger baby, then you have a floppy eared dog. I bet he is a real cutie.
2. ODORLESS TABS: Stop these too. If his breath and poop smell he might do better on a different dog food. Keep brushing his teeth. I use CET Dental vanilla mint toothpaste on mine for kissable and minty vanilla breath!
3. ROYAL CANIN W/ ADDED MILK: Stop the milk. It's not good for him. Switch the food if you want. See #2 above.
4. IS DIET OK AND WHICH SUPPLEMENT TO TAKE OUT: Diet is ok, but see #2 above. Take out all the supplements.
Best wishes!!