Hi Jennifer-
I agree with what anonymously said and think she has given you a good place to start.
I also just wanted to mention that you’re not harming him by getting him on a good eating regime by removing the food after 15-20 mins. Sometimes tough love is the way to go with certain dogs and if not, you can create an even more picky eater. I should know, I went through all this. Dogs thrive on a schedule and getting him back into one might actually be helpful if he is experiencing any grief for leaving his owner.
