sorry you had to join the club. Two options can save hearing: Middle fossa and retrosigmoid. these are two different approaches to the tumor. One from above the ear and one from back and behind it. In general, Middle fossa has better rates at hearing retention, but it is only appropriate for smaller tumors. My guess is yours is right on the edge. Mine was 1.2 cm and my surgeon said it was "on the large side of medium." The other factor is not as many surgical centers do middle fossa, because there are not as many reasons to go through the skull from that direction. So it might be worth asking a few different places.
Good luck, and happy to answer more questions if you have them.
Greece Lover