Right now if he is acting that way towards you, then keep going with what you are doing. Im telling you from experience that my W was saying things along the same lines, making plans for the future that didnt include me. The best thing you can do is put on your happy face, even offer some minor suggestions on things that he is doing. Its good that he is leaving the door open, the 3-6 months comment. Dont overreact to that though, just brush it off. You are calm and cool and youre planning on living without him right now.
He notices your changes Im sure. Dont worry about that feeling that it isnt going to get any better. The more you stay consistent with the changes, the more he will be able to trust them. Just continue on with them. If he is making some noticeable changes also then it is possible that those are driven by your changes that he sees. You know the answer to all of this, but I think you just wanted some reassurances. Youre doing it right, keep going!
M:33 W:30 T:10 M:2 B/D: 5/27/14 S: 5/28/14 Wife moved back in 7/18/14