Greg .....
It sounds like you are doing well at two weeks post-op!
Cheryl is right about the sleeping issues. It took awhile to restore normal sleep patterns. Are you still taking steroids? If so, that can be a big cause for insomnia.
As for second guessing the treatment option, I know you did your research beforehand and you were probably assured by your doctors that the location of your tumor would most likely result in you being SSD ..... so the surgical approach may not have mattered as far as hearing preservation in your case. I did not read all of your previous posts, but a BAHA or transear may be options for you.
On pushing your body ..... during this post-op time, it is equally important to give your body time to heal as it is to push yourself to exercise. As we frequently say on here it is walk, rest, rest, walk, rest, rest, walk, etc. Be sure to listen to your body and take frequent rest breaks, as needed.
Best thoughts for a continued good recovery.
Clarice