Hi there... I wouldn't do any LST at the moment, you have just her 1 stem.. and she's struggling to get to the LIGHT... lower your lights, put a toothpick next to her to 'wedge' her up... maybe even put more soil around the base of her stem. She's wanting to grow, she just can't see the light enough.. lower them down to 24 inches above to see how she reacts, then you can do more or less.. Good luck! ps. also, invest in some stronger lighting... you can get some for like $100usd.