I have a slight delima. I have 1 9 week old plant that's getting kinda big and I need to begin flowering. I also have 2 plants that aren't mature yet. I have 1 that's on its 6th node and the other is only on its 3rd. I also have a clone that doesn't have roots yet. If I change to 12/12 will they continue to veg til they become mature?