Kiki, You mention in your first post that you have been trying to reconcile since mid-December. What steps have you been taking to do this? How long has your H been involved with the OW? What does he think about reconciliation?
I don't know that you can predict how long these things will last since everyone's sitch is different. But, I think I read that the average is 6 months before they die a natural death.
Welcome to the "fence"; the land of patience and working on you LO