One might have described me as a man's man. Former police officer, tractor trailer driver, and a big man with a big beard. This is the show. It's the performance I did to compensate for how I felt. Deep inside though, I felt angry, cut off, and confined.
My opinion though, is the your spouse is on a euphoria high and things are going very fast.
I believe before people transition, they seek therapy for themselves and their SO.
This will be a huge change for both of you and may redefine your relationship. A therapist can be a rudder to help navigate those waters.