Just be yourself! No talks about the relationship, the ow or who you are possibly seeing. Keep conversations light and airy and on topics concerning your children and special interests.
All changes should be for you, not to prove to your h that you can and have done it. The less said about the changes, the better because he will think that you are doing them just to get him to return home. They are sick little birds and need to understand that home is where the heart is and the safest place to land. Make your home that place!
Keep your focus on you and your children and allow God to work on your sick little bird.
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.