Have you tried to drive? You sound like me before DBS. I used to freeze but if you got me to a staircase I could go up and down all day long. I could not drive because I couldn't trust my feet to hit the gas or brake pedal. After DBS I tried again but I found that if it was closing in on my next pill I still would have the loss of sensation in my feet. The car that I drive has a brake pedal that has a lot of travel and pushing it down I hit the gas a few times so I am a passenger only till something changes. It's actually not so bad if you have a friendly driver.