Flight, I've been feeling that way lately too. When I wake up in the morning, I think to myself, this is my life now and I need to just accept it. Of course I will love him from a distance but yes, I've let him go to go on his own journey.
IMHO, I think you should continue to detach, do your 180s and love from a distance, and that may include a few runs of NC. I know its hard, I'm going through this now but we will get through this.
"Be messy and complicated and afraid and show up anyways."