Thats is really good news. So, PT is paying off, just not as fast as you would have liked it to be but thats ok, you are shwoing improvement so now you know its working.
I was instructed on my Tens to turn it up as high as I could stand it, but I was not to reproduce pain. I could then back it off a little. I think turning it up too high can cause problems.
Do not be surprised if the dr does not release you to return to work on this appt coming up. He may want you in more PT or at least at the center a few weeks before letting you return to work. Even with your improvements you still have alot of deficit. The fact that you are not walking correctly tells you something. So, again, do not be surprised.
I cannot belive you lost your tennis shoes,lol. I hope by now you either found them or replaced them lol.