How can I help myself with avascular necrosis? Will any

How can I help myself with avascular necrosis? Will any exercise or therapy help?Has anyone avoided hip replacement? Thank you

My son, went to physical therapy 3 times a week. ( He was 6 at the time) The exercise were to TRY to reshape the bone, and keep the socket smooth. It also helped him to keep his range of motion. He has it in both hips, had surgery on just one hip, almost 3 years age. The surgery gave him back his life! I dont think theres any thing that can be done to avoid the progressen of perthes, but excercise,rest,limiting activity,can slow down the damage to the bone. I’m not a Doctor— just a Mom