Hello @barrymiles, I would like to add my welcome to Connect along with @jankavs and others. I have idiopathic small fiber peripheral neuropathy and shared my story in another discussion here - https://connect.mayoclinic.org/comment/310341/. I also have trouble walking up hills and stairs (walking down also) but my legs don't hurt or get more numb than they already are. I think my problem with the walking is may be related to lower back issues since I have difficulty walking any distance at all, just more so on inclines.

There are a couple of other discussions you might find helpful that mentions neuropathy and sciatica:
-- Peripheral neuropathy and sciatica: What helps with the pain?
https://connect.mayoclinic.org/discussion/peripheral-neruopathy-injections-not-working-tramadol-to-control-pa/
-- Myofascial Release Therapy (MFR) for treating compression and pain:
https://connect.mayoclinic.org/discussion/myofascial-release-therapy-mfr-for-treating-compression-and-pain/
A great source for learning more about your condition is the Foundation for Peripheral Neuropathy - https://www.foundationforpn.org/newly-diagnosed/. You mentioned you are waiting for your appointment with a neurologist. Do you mind providing an update after you meet with your neurologist?