For me I have a rough date for when I plan to S if things aren't improving to show her what life will be like w/o me but now I have to consistently show her the new me and what she'd be missing before that. Think about it, right now she doesn't like you so if she leaves do you think she'll miss anything? You need to become the perfect husband for her and then if she leaves she might realize what a mistake it is.
That was my approach as well. It was about 3 months from BD to S, so I made the most of that time and showed her the best H I could be. She did acknowledge how much I had changed, in MC she even said I had transformed into the "perfect husband". She still felt like she had to leave, but at least I was able to show her how things could be in the future if we get back together. Once she moved out I went into full DB'ing mode and detached. How it's all going to work out in the long run is still unknown, but I'm confident that I showed her what I could while I could.
