Rookie Glycol Mistake

was filling my glycol In my 2020 T@B 320 for the first time and was unable to see the max/min line or the glycol. Got a UVA light and dental mirror and realized I overfilled. (Yes I should have had them on hand while actually doing the fill.) Is there a drain somewhere down the line that I can use to drain a bit out of the tank? I assume the max line is there for a good reason so I don’t want to operate the system if I shouldn’t. Appreciate any advice