I agree...he's not to the point of wanting to return...but he still needs that connection to know that you and the "routine" are still there.
I'm glad he came over and did some things around the home. At least it shows that he feels comfortable in doing them, even w/the children around.
Keep the focus on you for a while.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.