Interior rear window tint

I got my 2025 Nissan Sentra windows tinted however the rear window tint (interior) is blocking my third brake light which is a problem for the state safety inspection. I called places to see if they can just trim around my brake light, however ive been told by multiple places that i would need to remove the whole tint and get a new one installed. How manageable would it be for me to trim it myself, or should I just get it replaced?