Hello,
I had about 12 ounces of a mixed 23 proof drink on Tuesday at roughly 7 PM. I am taking an ETG test today, Thursday, at 3:30 PM. Any advice on quick cleansing methods and/or my chances of passing? Thank you.

No one will help you with clean cleansing because it would assist you in circumventing testing.

Enough time has passed - you should test clean.