Need help, I have 36 hours to pee clean

So im 29(m) more on the athletic side, but I wouldn’t call myself healthy, or fit. I weigh approx 180 pounds and I’ve been a habitual weed smoker for years.

I have this nice opportunity for a job, all I have to do is pass a drug test. I took a drug test last week using a upass and basically failed, the test came back as inconclusive, i neither pass nor failed, and I have to retake the test being observed. So my only hope is to take it naturally, is there any trick I do within the next 24 hours that can help me pass this drug test with my build? Is the best thing I can do is start drinking water and take a vitamin B pill before I take the test?