I have a horribly picky eater, I know exactly what you are going through. I have found that Rudy will eat Stella and Chewies freeze dried Raw (eats the venison and lamb) really well and sometimes the beef. I mix it with unpastuerized goats milk and he will gobble it up 2 to 3 x's daily. 1 whole patty each time. Ideally I would love for him to be around 4lbs. But he is a little under 3 1/2. Pounds and very healthy just wished he had a little more meat on his bones.
P.s. on days he doesn't want to eat Stella and Chewies I will offer him more milk or Primal Freeze dried RAW nuggets as back up and he will eat it. He prefers to eat it dry just offer him lots of water through out the day.
Hope this helps