Oh wow. That's not going to go well. Hopefully your H will blame him for the intervention attempt and not you. Here's the thing, only your H can heal himself. Any attempt anyone makes at trying to heal or fix him is just going to appear to him as pressure. What he does not want or need in any form right now is pressure. DB'ing is all about giving time and space to the WAS because they need it to fix themselves. There's just no other way to get there.