My Skin Doctor Recommends Cutting the Fibrosis Tissue Under The Scar, is This a Normal Procedure?

I have a white long flat scar above my right eyebrow, it's 3 years old, i got in a car accident! I had some genesis laser done right after the wound healed. Now I'm looking in diminishing the appearance! My doct recomended to go under the scar with a needle and cut/ remove the fibrosis tissue. He want to do this every 2 weeks a couple of months. I have never heard of something likes this. Pls let me know if this is normal! My scar is elevated at one end, eyebrow,, depressed other side!

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