He sees the changes and in his mind, he thinks you are doing it just to make him rethink what he is doing. Your changes have to become permanent and not just a ploy to him. Don't change a thing back to the way you use to do them.
When he spouts about things that he's unhappy about just say "h, I'm sorry you feel the way that you do" and just leave it be.
You will learn to dislike his behavior more and more. He's picking a fight to justify everything he's doing and to help him make the decision to leave. If he wants to leave, he'll do it under his own steam.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
