@redsoxn2024-

You would not want to be awake for this. The bone between your eye and the ethmoid cavity is the thickness of an egg shell. They also have to make many passes through your nasal cavity with tools.

Just be sure this ENT is a Rhinologist whom is comfortable working in ALL areas of the sinuses. Some are not.

Would also read through this article.
Make sure you have been cultured and or tried this type of antimicrobial/antibiotic therapy w/ the assistance of your ENT
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1169095/#:~:text=Antimicrobials%20used%20for%20chronic%20ethmoid,quinolones%20(e.g.%2C%20moxifloxacin)
Have you tried oral steroids in combination with the antibiotics?
And or topcial steroid sprays with it?