Hey Christine no experience here but if you recall BillM's success w/W, she too slept in a different room. He didn't push or anything. He tried to make things "nice"for her to come back to so it would be more like "theirs" by getting a new comforter; putting some other comfortable things in the room. In time, she eventually came back to the room and it didn't really take that long - month or so- but it seemed long to him (of course).
It's good you're not pushing. If he's gonna sleep w/you this weekend that may be a start. Maybe you need to add some comfort there as well by changing something around? paint the room, rearrange it, get new curtains??? anything that you can get him involved in may make him feel part of it and that he really does belong there. Just some thoughts for you to ponder.
