Too true, I have one that formed buds at approx. 15 inches it's now about 35 inches and still stretchingI was going to say that you should also be careful with using an airpot and letting it get very dry because you can unintentionally overprune the roots and end up with like a quart or two of moist useable dirt ffor the roots. Try to water in a spiral from the outside -> in. It should also get another several inches on each branch tip with a cola. Initial pistil growth isnt the end of the plant's height by any means.
I don't know when it's going to stop but it will yield maybe 3+ oz's.