You are working really hard to do what's best for him....even if he isn't able to see that right now. I know it must be exhausting for you. Are you having any "down time" for yourself where you relax?
If there is anything harder than being depressed...it has to be "living" with the one who is depressed. God bless you!
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!