Here's what I'd do:
Wait until the medium is very dry, to the point where it's almost, but not quite, starting to droop from needing water. Then, starting about a finger's width above soil level, start working the stem where you can get your fingers in by giving it a pinch. First one side, then bring your fingers around 90 degrees and pinch again all the way up to just below your top two or three nodes. Pinch just hard enough to kinda crush the stem, but take care you don't twist or cut it with a nail and break any of it off. Now that your plant is nice and floppy, tie it down LST style. Now, give it a good, full watering....I mean like take it into another container big enough to hold the entire pot and fill with water until the root/dirt mass is completely submerged. Wait till all bubbles stop rising to the surface. Remove and let drain thouroughly. Put it back under your lights and watch it explode with fresh growth after a couple of days.
Fat bags!