If it were me I'd sit the guy down and be honest about your concerns. I'd tell him you feel the project is taking too long and you need to see more progress being made or you'll be forced to find another shop to finish it. What I'd do next would depend on his answers.

Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.