What are the various treatments for internal scar tissue from stitches?

I had an extensive DR/TT repair about (8 ms ago). Unrelated, I had an MRI, my plastic surgeon looked at the MRI and there are a bunch of black dots in my abdominal wall that coincide with the stitches. He said that he used PDO/PDS so these are most likely scar tissue although sometimes stitches can hang on. These bumps pull, hurt and have tension. He suggested I just continue to stretch, exercise and give it time to soften. I was curious if there are other procedures available to help?