That plant looks great.
You may need to transplant into a different soil before flowering, some soils have slow release nutrients, and that can cause a problem for cannabis when they start flowering, because they just get too much Nitrogen. That can cause lots of leave growth, and not much bud growth. I think Black Gold has that, so double check the label. What strain does O.J. stand for? Probably something I should recognize, but can't think of it Lol.
Love the user name by the way! You should get like a plush cow for an avatar, at least it's what I'd have.