question for the stoners

29F

after multiple meds for CPTSD, OCD and depression, even did TMS, my psychiatrists office is starting me on ketamine iv therapy tonight, i know the prep paper said no caffeine 8 hours before the treatment, but i’m an all day stoner most of the time, i take breaks but i’m so nervous and anxious for tonight’s first dose that i just want to smoke, should i just stay away from all stimulants?? also appreciate any advice and what to expect for your first time. ugh i’m so nervous