Nicole, I wish we could snap our fingers and no longer be detached. That would make it so much easier. 25mlc first reminded me that the process is not linear. You are going to have bad days and weeks, but over time, the bad ones get shorter and further apart.
You mention that the current approach isn't working to save your marriage. I suspect your marriage is over and done. I don't think your H is coming back. I really wish I could tell you differently. You are going down a cheeseless tunnel trying to save it.
I think at this point, you might want to work on saving yourself. You are already doing a lot of what you need to do, like GAL, seeing a counselor. With time, it WILL get better.
Try to look at H moving closer as a blessing. I know it's hard to have your D spend time with him, and away from you, (and those times can be very lonely if you let them be), but they are also opportunities to get out and GAL. You can devote yourself fully to something.
M:23 T:26 Me:53, Wife: 60 S:18 D:16 filed 7/16 W moved out 4/28/17