Grats! In two months you should see your t-levels come down. In that amount of time, mine went waaay down to almost nothing, but then I was also on E and P so I don't know if that makes a difference. With your t-levels down, your sex drive (if you have one) will likely decrease or disappear altogether, and you'll probably get tired. Again, I was also on E and P, so I think any other changes I experienced could be because of those, but I know lack of testosterone alone will certainly drain your energy, especially without another sex hormone taking over.
As for spiro alone being considered HRT, I would say in a technical sense, no. You're replacing one hormone with another, so a t-blocker is only the first step in doing so.