Sorry for what is happening. I am a little late with this but LR gave you good advice. I would try to stay as dark as possible. Don't do anything to help him with the D. Protect yourself but try not to speed up the process. How long does it take in your state? Believe it or not validating his desire for a D although counterintuitive may actually make him realize that what he is doing is wrong.
Hang in there. These are tough times. Keep on working on your GAL activities.
