We cannot be certain as to what extent of pain relief this program can provide, but any exercise that increases the range of motion of the affected muscles (buttocks, thighs, hips, and perineum) is beneficial. This includes toe touches, supine legs lifts and side leg raises where the leg is extended out and away from the mid-point of the body. These exercises help to improve range of motion and lengthen the muscles. Pulling the knee gently toward the chest from a side-lying position loosens tight buttock muscles.
Swimming pools are a great place to perform range of motion exercises. Water relieves pressure on weight-bearing joints, minimizing pain.
Here is a great video our Physio Therapist did and you can follow along. https://www.facebook.com/healingthroughmovement1/videos/2042851055927218/