Nutrition balancing and hydration as always.
Yoga and ground stretches to strengthen core.
I had something like that and got some
https://en.wikipedia.org/wiki/Rolfing done.
Very painful at the time but it worked I guess. I became functional again.
It's a make-or break thing.
Imagine a guy pushing into your hip with his elbow hard as he can. Torture.
And then for the next few weeks or more you feel balanced and normal again