Early flower has started. How do I max the yield and potency early?

If she's flowering, you need to CUT the nitrogen, not increase it! The flowering stage does not need/does not LIKE a lot of nitrogen! With autoflowers, you need to start bloom nutes when the plants go into pre-flower... but they needed nutes earlier than that as well.... the tough thing (ONE of the tough things) about autoflowers is they don't like any nutes whatsoever for at least the first week or two and then you need to start them cautiously at about 1/4 strength... but you're way past that now. Scheduling nutes is easy - follow the water/feed/water/feed routine and that's it... but make certain the pot is completely dry before giving them anything... I would also say, looking at the coloring, that you've got some issues with the PH.... have you checked the PH of your runoff? If not, start there... it should be between 6.0 and 6.5 with 6.3 being the "sweet spot" - that will allow the plants to absorb any nutrient or micronutrient it needs... I only grow autoflowers so take a look at any of my diaries if you want... And good luck!