SS, I didn't realize you had a new thread. First of all, congrats! Second, I read a book about coming back together after a separation. I wish I had read it before my H moved back into the house after his A was over. We made a lot of mistakes and he ended up wanting a D and moving out again. So read this book:
Getting Back Together: How To Reconcile With Your Partner - And Make It Last by Bettie B. Youngs.

The most important thing is to figure out if the physical move back together makes sense now. You say you got used to being on your own and interactions are a bit stiff. Maybe something gradual would be better--the book talks about this.

Best of luck! (((((()))))