Honestly, I think you are doing great so my advice would be to keep it up and be consistent with your actions (the ones that are working)! If my H was consistent I would trust that the changes (if he were to make any) were for real.
Your W is going to be skeptical and not believe that your actions are real or are going to last. That is okay, just keep it up consistently on your end. Actions speak louder then words. My H has told me he is sorry for the same thing so many times I could give the speech by heart now. So you can imagine that I don't take him very serioulsy when he says it and I am just waiting for him to do it again, sad to say but true. So don't do as much talking, do more showing.
Also give your W time to let the changes sink in. You will need a lot of patience for this! So try not to get frustrated because that can lead to backsliding and until your W believes the changes you are making are genuine and going to last the minute you backslide she will think, I knew the changes weren't real and that he is his same old self ~ or at least that is what I would think (& have thought) if it were my H. Not to say that if you backslide you can't get the momentum back but it will take work!
