Sorry my post sounded somewhat rude but if this guy is in charge of making all the decisions It's highly unlikely that he'll make any changes based on anything you might learn online. If this is your own grow maybe it's time you left the nest and learned to fly on your own. You'll never get better at growing until you start being the one making the decisions. From what it sounds like you're not a grower just an assistant.
Also, you say 12 - 14 weeks to harvest. It sounds like you're flowering small plants and harvesting them too early.