To those Ents that really know the effects of tree usage on the brain, I ask for help.

I am preparing for the LSATs (law school admission test) and I have been on a 90 day break now. Before, I have been a heavy chronic user of trees (smoke weed errday). It has impacted my motivation but I mainly attribute it to my immaturity of not being able to control usage. So I decided to take this long break until the exam in October. But I fucking miss trees so badly. Soooooo badly. I am prepared yo exert discipline but I am not ready to fuck up on this test. This test holds a lot of importance in my life, and I not willing to give up this for trees. So, Ents, will trees lower my potential (assuming once a week usage), or should I just wait until after October?