If it where me, I would have tried an inversion machine, I have one and it helps at times, compression in my lower back plays hell with not only my lower back pain but foot neuropathy and leg pain also. Horse riding may not be helpful. I use a real tight belt when when pain gets bad and it helps big time. I take no meds, never did never will, I am 74 and lifted heavy more then a human was supposed to I guess. I still get out and bird hunt but the pain now limits the durations.