I think it may be "drooping" because your lights are on the side and its trying to catch the light, try putting them above the plant for awhile to see if the leaves curl back up, if this is the case, move them back down, and get more lights for a 360 degree coverage, and try to get a light on top too.. plus you're going to want softwhite light for flowering unless you have a HPS. So a combination would be good