I would suggest next time watch videos of LST, even if in a solo cup again these plants can get very big and produce a good harvest. With the right lighting, environment, water, nutes, making sure everything is on point. I tried an auto under 12 12. Did the first three weeks 18 6 then just left in my tent and this pic is day 44 of my auto with LST in a 1 gallon pot. Not to mention I broke one branch off.
Edit: Mines a little stretched as well because I didn't want my lights to burn it because my photoperiod is big and this auto flew up. Lol