Hey TLT, u might try the LST method. Bending and tyeing off. Remember, once they start to flower, they will stretch around 200/300% So if your already out growing your space, then you mat be in trouble. You could top them also.
How long did u veg. the plant? Next time, try only a 2 week veg. then go to 12/12. Plants will stay way shorter and more managable..
Good luck,
Rip