+1. I guess it depends partly upon how dry your weather will be during the next few days.

Where I am (damper, less hot, lots of powdery mildew), I can say that not evicting the early signs of mildew (there's no point for my locale) means that the plant starts dying anyway. Plucking leaves in case the plant can make new leaves with adequate/appropriate provision of water seems sensible, IMO.