What can I do about my donor area as I am now 3 months after the FUE surgery?

You have a heavily depleted donor area and as of this time, if it does not return in the next month or two, you have only one choice and that is Scalp Micropigmentation (see: https://scalpmicropigmentation.com/scar-covering/). Make sure that when selecting someone to fix it, you don’t make another selection error in your doctor