Try to imagine about how you might feel in a year or 2 years if you push through the D fast? Would you think that you made a mistake by rushing into it?
Where I live you cant even file for a D until you have been separated for 1 year which I think is great because it avoids the D out of initial anger. If your H has asked to cancel the app then that sounds to me like he doesn't want to D. Maybe he didn't come back so to give you some space to think?
My personal opinion is not to push through a D fast. I wouldn't even file anything right now.