If the foot drop is interfering with walking, have you considered AFOs? ( ankle foot orthotics) I just got mine about a month ago, allard toe-offs, and the difference is amazing, I walk much faster, I don't really need a cane anymore, and I am much more "rooted" to the ground, much more stable. No more gravel sliding noises as I shuffle along either. They are cumbersome but I got used to them quickly. Anyone with muscle deterioration from PN should consider them although they are primarily used for hereditary neuropathy as that causes progressive muscle atrophy.
Driving is definitely getting harder, my legs are completely numb to the knees. I have to switch out of my braces to drive and only drive locally. My strength gives out within 15 minutes.
I guess my theme song is "comfortably numb" since my medication works pretty well for the sharp pains in my feet and legs.