Currently It Is 3:15 P.m. And I Am Told To

Currently it is 3:15 p.m. and I am told to start taking Prepopik starting at 5 p.m. I have followed all of my doctor's instructions as to keep a clear liquid diet would it be okay if I smoked some weed now or should I not my colonoscopy is scheduled for tomorrow at 9 a.m.