Hope I think that is very noble to not just throw up your hands and move on. I also think everyone's situation is unique to them and what is right for one does not make it right for someone else.
Concerning your H and your efforts, when was the last time you reevaluated your methods. I sounds as though he is still interested but... has he seen enough change, have you changed the pursuer/distance relationship. Look back at what you have been trying and evaluate the fruits of those efforts and consider changing somethings up.
I cannot say whether it will or will not work. Only you truly know your sitch but maybe you could post what changes you are considering and get some feedback.
I wish you the very best, and keep your hope in your heart!
Me 41 W 33 M 2013 Suspect A 11/15 Confirm A 1/16 She moved out 2/14/16 Stepson 13 Stepson 16