Hello, I just harvested my first plant. It was only about 9" tall. When I pulled the stem out, the root ball was tiny. As a seedling, I watered it in a circle a few inches from the stem trying to get the roots to use up the entire pot, but that obviously didn't work. What do I need to do to maximize the root size? Do I water more/less? At what point do I start watering until runoff?