We conjure up all these thoughts and fears in our minds and they send us reeling.
The truth is, you have ZERO control over your H. There's not a thing you can do to get him to return on your timeframe. There's not a conversation you can have that will make him snap out of it.
He will need to snap out of his fog completely on his own. It will likely be a time when you least expect it (and that's IF it happens).
The absolute fastest way to get him to come home is to make yourself as attractive as possible. You need to ooze happiness. You need to be physically healthy. You need to be ambitious.
Those are the things that he will see from afar and wonder why he's isn't with you.
There's no promises but I have seen DB work. It worked for me 18 months ago.
The hard part is releasing the pain and being ok on your own. That's when things start to fall into place. Unfortunately, releasing the pain takes time and effort, there is no shortcut.
You can do this, Hope. It hurts like hell but you can do it.