Put it back into veg conditions, 18/6 lights at 400W-600W, and a veg nutrient balance. Be sure to leave some of the lower buds so clones can grow out from them, revegging from a fully harvested plant (stems/branches only and no buds) is very difficult. Revegging usually takes 4-6 weeks before a decent clone appears. It will look really weird for a while until that vegetative growth comes out.