ILGM Wedding Cake Auto DWC

I severely underestimated how tall she would grow and now I am left with a big plant and a small tent. I'm not entirely sure but I think she either has a little nutrient burn or the lights are burning the leaves, (I'm guessing it's the nutes though) Still no LST or anything. I am tucking her leaves here and there to make sure she doesn't block light to the lower sections but it's still a little dark down there. Does anyone still recommend I go in and do some defoliation?