Is Vivace Microneedling with PRP a good option for stretch mark removal? (photos)

I have extensive stretch marks from pregnancy and am seeking treatment to dramatically reduce them. I was told by a medical provider that I need 3-5 treatments for the flanks & abdomen. Is this accurate? if not, what treatment do you suggest? I don't want to spend $10k on a treatment that won't work. Please help :-/