How to get alcohol out of system quickly for court drug test

I am new to the court drug test program and I am very confused as to why they even tried my ass with the no alcohol consumption since my charges were drug related. Anyhow, I have my second drug test this Wednesday. What is the lifespan of alcohol in urine? I am veryyyyy tiny, so I’ve been drinking water (prob not enough). Anything else I should know and be aware of before my test?

Can’t afford to fuck this up