arsh, W and I lived together for almost a year after DB. I really think that once he moves out, it will be easier for you. It will require adjustment, no doubt, but when you no longer have to walk around his stuff in the house, and you don't have to worry about him trying to start an argument at any time, you will feel like a weight has lifted.
I don't think moving quickly is necessarily good, but if it doesn't move quickly, I can tell you that limbo [censored], and makes it hard to detach.
M:23 T:26 Me:53, Wife: 60 S:18 D:16 filed 7/16 W moved out 4/28/17