How to LST if my plant isn't growing tall?

I'm about 3 weeks in and my plant has around 4-5 nodes growing few inches away from 6500 2xCFLs and 1 2300 in a homemade PC box. they got so short and bushy that i don't know if i can even LST them. the plant is literally 3-4 inches tall with 4-5 nodes. What should i do? This is a femed northern lights.

Updated with pictures, cut off the first set of leaves due to yellowing from overwatering and not enough oxygen. The plant is recovering from that and doing nicely

first thing you should do is put in a bigger pot, something that the roots have room to grow in. I'd bet the shortness is due to no space for root growth.PC's aren't ideal by any means so you're stuck with a midget plant regardless, but a pigger pot will help that, then you'll be able to worry about LST'ing it.

I'd say leave it the way it is man, you're growing in a pc box. It's not gonna be that big forever. In a month its gonna be at least twice as tall as it is now (6-8inches) and when it's finished flowering it will probably (if your lucky) only twice as tall as that (12-16inches). I say it's a blessing in disguise.