if only twoo weeks left i would cover the compost in the pots with plastic to reduce humidity and put a small heating with axcess off fresh air in the room. mayby worth to cut a bit off this leafs, not all of them rather.
hope u want get it on your buds!
get a duhumidifier, or a small oil radiator in front of the oscilating fanwill bring your humidity right down, put the leaves in complete darkness that will kill the mildew,or just chop if its only 1 or 2 leaves
remove effected area, being careful not to disturb the spores, and mist plants with milk solution. hopefully it's not in the buds...if it is you need to remove the effected part.
hows your ventilation? Your not moving enough air? Or your not filtering the air comeing in? Not that it's going to matter for this grow. Really milk will kill it like 1 part milk to 7 or 9 parts water, and mist it on.
Especially this close to harvest, you don't want to spray any fungicide on it it will stick to everything.