Your numbers are good, and as mentioned already, they will likely get better over the next few months at minimum.
Your motility is “a bit” on the lower end, but it’s still good. I’m not thinking there is any reason to get on a steroid such as prednisone, and I doubt ICVR would recommend it at this point either.
Stick with the celebrex for a couple more months if you have no reason (such as medical reasons) to get off it now. Anyone that is unaware of the risks of a powerful NSAID such as celebrex, a simple Google search will tell all.
I know of some guys that got off the celebrex in a matter of 4-8~ weeks, and switched over to an all natural NSAID regiment for several months post reversal, and did very well pain wise, and patency wise.
Good luck man.