I think i would pinch the stalk and fold down some of those long ganglely ones that have stretched after a day or two to let them recover from snipping thier heads off. If you pull those down to the same height as the lower growth you should have a nice bush come up. good luck looks like everything is taking off well. if you can lower your lights some, it should make them not stretch so much just be careful for heat if it is comfortable to the back of your hand then it should be ok for the plants.:thumbsup: