If you have made changes that he has already noticed, that is a great start. Most people do not get that chance.
I would think he is panicy around you because he is unsure of his feelings and doesn't want to lead you on thinking, "its all back to good". He doesn't want to hurt you so it seems he panics.
I'll try to explain that a little more. I recently broke up with a woman who had a lot more feelings for me. I could see it, I could feel it. I like her but I am not in love with her. I Know I would never be. We still hang out and I can feel her wanting to reach out and hold my hand or just touch me but I feel if I were to initiate that, I would be leading her on so I get uncomfortable. I would think he is going through some of those feelings.
For me, what makes me want the person I do love, is seeing them doing well without me. That is to say, it kills me to see them fine without me. I have to hope (as an LB, and that can be marraige or relationship), that what they say on here is true and we want what we cant have and not needing them is attractive.
I know what doesn't work: Telling them you love them Telling them you miss them REASONING IS PROBABLY THE WORST (hope other WASs will confirm these) Text, Calls and Emails are no good
As much as it kills you, You have to show, Your fine with his decission. You have shown you are willing to talk about the problem. You have shown changes he wanted. Now you have to show him, you don't need him.
You want him off the fence, show you don't need him. WARNING!!!!!!! He may not fall to the side of the fence you want. You can't force a heart but you can mess with a head. Guys see things different. I am not advicating this either just giving an example. When a guy gives up a woman and has moved on to another relationship, if he see her with another man, it does rattle him wheather he wanted her or not. So think about that in this way. You are seperated right now (if I understood your post) for another 2 months? Be happy when he calls, be busy, be out with friends and hard to get a hold of. If he asks what you are doing, tell him your doing something fun...going to a movie with "friends" the zoo whatever.
If he calls you on a friday or saturday night, don't answer. Then when you talk to him, tell him you were out dancing. First thing he is going to think is you were dancing with another man. Another Rooster in the Hen House. I am not advicating lying so you may want to go and what is stopping you? He doesn't know how he feels, why should you put your life on hold. And that will make him think.
Again, this doesn't always work the way we want. Sometimes their mind is made up. This is not proffessional advice but it is advice from someone who as a LB has been crushed to hear these things about the person I cared for. Why not turn the talbes?
Hope to hear more from you. I didn't think you were coming back.