I've always had low-back problems (and still do.) Around 20 years ago or so I sustained a ruptured disc in my low back (presumably the L5-S1 disc.) And this disc impinged on my sciatic nerve. So I had sciatica from that.

I never sought treatment for it. (My experience has been that medical / surgical treatments for low-back issues are always "iffy" at best.) But during that time period we always had dogs. And I walked them every day. Sometimes the pain would be such that I wondered if I'd made it home. But I always did. And over time my sciatica gradually lessened to the point where it was no longer of consequence. That's not to say it's gone entirely... but almost. I rarely even notice it anymore. I still have the same low-back problems though. In fact I just strained the muscles in my low back again a few days ago while shoveling snow! But I'm gradually recuperating from that as well now.

Hope you're able to resolve your own sciatica issues. Best wishes...