I found your thread a week ago and haven't had a chance to get up to speed yet, but thought I would toss out an idea that 'kinda' worked in my situation. When my H left 1 year ago he was pretty manic and pushed very hard for divorce (no OW --- this has been confirmed by multiple sources). I felt and still feel he has been having mental health problems and I wanted to gain time for his emotions to 'even out', hoping that he might come to his senses. I agreed to sign the D agreement we negotiated if he would postpone the D date 6 months. I told him that the D was so sudden and unexpected that I needed additional time to come to grips with it. The 6 month extension ends in 6 weeks. There has been no sign of H changing his mind, but over the last 6 months we have moved into definite friendship territory, shared several evenings on the patio, a lot of hugs, and a handful of chaste kisses, none of which would have occurred had it not been for the 6 month extension.
This could be something to consider pulling out of your back pocket when the time comes if you are so inclined. Time DOES have a way of changing our perspectives.