I haven't asked H more about what he meant on the "giving up on myself" comment because I don't think I'm ready to hear the answer. Trying to just kind of coast for now, get my focus back, and build those positive interactions with H when I can. I still feel a growing distance there... not sure what it's about, not sure it matters at this point either.
Try not to panic about the distance , hes probably just retreating into his cave for a while to work through things in his own head , this may not be a bad thing . He may come out feeling much better . Carry on being supportive and let him have this space. You have shown him all the changes and keeping them up thats all you need to do.