Starving? Is it turning yellow, brown, or dieing? If your MJ plant is thriving and green I wouldn't worry to much about it. Growth good? just follow the directions. Most of the products that are produced for growing any type of plant suggest you use the directions. If you plant looks great I wouldn't worry to much. If you run into yellowing in leaves or spots then repost and I would be glad to help you out. But until then if everything kosher keep up what you are doing.