Vanessa, I am very happy for you. You have now crossed a bridge to where you should be very capable of communicating better with your wife. I strongly believe there should be a day that you come completely clean with her about your past cross dressing. You can explain that many of your mood swings or being mad or whatever caused the marital problems before the breakup are directly related to your having to hide it for fear of losing her. From what you say, that is ju8st not going to happen now. She is more then accepting. But don't continue the lies of the past. Your opportunity to be 100% open and honest are here and now.
Did you make up this thing about a man dressing as a woman for 45 days to calm his hormones, or did you read this somewhere? I never heard of such a thing. Sounds far fetched to me. And maybe even is far fetched to yo0ur wife, but she went along with it to see what would happen.
After this 45 day period, I'd still go slow, or slow down from the amount of dressing you are now allowed under this 45 day rule. Let her lead. If she is being honest and really likes you around dressed, she will lead and ask for you to dress. Just don't push it. I think you found a unique way to tell your wife and expose your dressing to her. Just don't keep up with other lies or it could all back fire.
Sounds like you both love each other. So now is the time to be completely open and honest with her, as she should be with you.
I wish you nothing but the best. And welcome out of the dark closet.