FUE and Micro-needling

So 4 years ago i received a Hair transplant. It went pretty good but in the end i would have wished to make it more dense. I started microneedling and minoxidil since the hair further back is a bit thinner. Nothing dramatic but i was wondering if hair could grow back on the spots of my transplant with this combo. I got a little bit thicker skin on the transplant area (from the FUE procedure) My question would also be if i need to microneedle that area with more depth ? Lets say 2mm. Right now i am needling with 1.5 mm.

Did all of the transplanted hair grow? Did you get your expectations met? If you want more thickness, find a doctor who will be honest with you about expectations and another FUE may solve the problem. Microneedling probably will not work in the transplanted area.