I have seen a lot of progress in how you've handled the situation and yourself throughout the months. It's not worthless at all. As our #1 priority is to work on ourselves without having any intention for the H or W to notice our changes and growth, we cannot help but hope that the changes will be noticed...for the better.
IMO, the reason why your H doesn't seem like he's budged even an millimeter is because of your current living arrangement. It is his choice to stay at home, in the marital bedroom. He feels negatively about it. The reason why he goes out a lot is to avoid being in the same house with you. He has all the possible armor on right now. My H would do the same. He hated being around me so much. And when you are dealing with a person who causes their stomachs to turn at the sheer sight of us, seeing any kind of acknowledgement of improvements on our end is pretty much impossible.
I think you'd have higher chances of any progress or movement if he actually moved out, at least out of the bedroom. It would also be much easier on you emotionally if you didn't have to wonder if he'd come to bed every night.
I don't understand why he had his heart set on signing a separation agreement before he moves out (at least out of the bedroom).
I also wanted to comment on you taking the time to go over the separation agreement with H, line by line, trying to understand what everything means. There is so much room for misinterpretation and unnecessary disagreements/fighting later on that you can potentially prevent by doing this now.
