The best way to help anyone is to help yourself. Your behavior may trigger responses in others that may result in them taking action. In your case (and even everyone’s), continue on your path to self-peace and happiness and perhaps one day he may take witness of the beauty in you and want the same for himself; finally taking action. As far as how long this will take will be up to him. Just be ready to be there for him as best you can when he finally seeks help/support.

Best of luck to you.