saliva test in less than 24 hours after being high all day..

hiii it’s me again :/ i’m being tested with saliva tests again and i need some help passing them just in case i can’t do my usual method (put a little water in my mouth and let the cotton soak that instead of my saliva). i’ve heard about things like hydrogen peroxide and detox mouthwash and i was wondering if there are any substitutes for either, or maybe a whole other method of passing to begin with. i was high all day today and pretty much all day yesterday and basically i’m just high all the time, but i haven’t had nicotine in about two days. please helppp!! thanks everybody :))