I have grade 2 spondylolisthesis at L5 for about two years and it hurts like a tucking son of a hitch. Been taking joint mere and deca seems to be helping. That and dieting to get every last bit of extra weight off those pinched discs. Like some said working on core. Get tight abs is like wearing a built support belt all day. I also use a lumbo sacral belt when doing laborious work. Trying to build my legs more than upper. I think whatbhelped cause this was getting too big on top and not doing abs enough. A large oak tree will fall if it does not have good trunk. I also use tens machine and sleep on firm mattress. Good luck bro and let me know if you know of any exercises I might try that would help.