I have to agree with Jake (@jakedduck1) regarding worrying about the future. There is no doubt in my mind that PN has a mind of its own and progression has a different pattern for everyone. I do my best to remain active which at times is not easy. I don't push it on bad days, and I'll be more active on good days. I feel we should not worry about things we can hardly control, like PN. Try to remain active, keep moving and do the best you can it might even slow down progression.