I have primary progressive MS

I got diagnosed late with primary progressive MS. I am in a lot of pain. Feet feel like stone(pain), arms and legs feel like they’re sunburned and major fatigue. I am currently on Ocrevas infusion. Any help would be appreciated.
I was thinking about trying Neurovital neuropathy, supplements anyone had any luck with these please point me in the right direction, Ucsf is not helping much