Canopy clearance

You're doing the right thing, listening to what the plant is saying and not the specs made by the light seller who never ever popped a bean :) It's a 100w light which is a on the scrappy side for a 2x2 tent, keep it as close as you can while still covering the entire plant and make the most of it. And like the other guy said do check if it's on max. If you wanna grow some real nasty drippin' trichs in there, add another light or two :)