I'm glad things are going ok for you and that you're trying out some things like walking while you have the trial, because that's really important. I took full advantage of my trial time from the first day but that's my personality, and I probably wouldn't recommend so much activity
I would go with what the others say and take it easy, but still try to do some things to see how the stim works while you're doing them. It also helped me a lot to keep a pain diary so I knew just how much the stim was helping.
Hope that the meeting with your rep goes well tomorrow and that you're able to get more coverage with your programs!