Considering Virtue RF Microneedling with PRP to treat atrophic scarring, will a 3.5 mm treatment be too deep?

I’ve consulted with my local dermatologist about skin rejuvenation & help with some atrophic scarring on face - chin, temples, nose. He recommended Virtue RF Microneedling. I met with his esthetician, she’s been doing the procedure for 1 year on patients. I asked her about depth and she said she always does an aggressive treatment at 3.5mm. I have thin, translucent, easily damaged skin. I’m wanting to improve it, not make it worse. Is 3.5mm too deep?