The do rise and fall a bit during day... are they always down? Are the top ones not praying?
After watering, they can droop.
If light was significantly more intense lately, it could droop.
So, it depends on recent behaviour to really deduce what is going on.
seeing color of leaves is never exact in pictures, but they look healthy from what i can see. little claw (down turn)? could ease off on nutes if really worired, don't toss anything in - yet - without a real answer and cause to do so. if you think there's some clawing or glossieness, definitely ease up for 1 irrigation at least.
I think it'll pop back in a week. easing off on nutes during bloom isn't wise, unless you are a regular feeder / posibly overfed with recent behaviour.. if any recent behaviour rules out anything i've said, that's just more possibilities eliminated for you to ignore.