iam growing a Jack Heerer in a 7 gallon planter. The plant is in its 9 week. The plant top bud is 4 inches above my lights, I can’t raise my lights any more. The top half of the plant is ready. The bottom half is about a 9 days behind. Can I cut the top half of my plant off, lower my lights to finish the grow. I don’t want to lose top part of the plant.