Said bud leaves major droop

Im stumped at what the problem is for this autoflower. Never been above 380 ppm. Help anyone?

Need pictures, but usually droopy leaves is caused by over or under watering.

Im pretty sure its not overwatered as rest of plant is not drooping. Been like this for a week now

How close is the light to the plant? And when was the last time that plant had water?

That large top should be super cropped down to the height of the rest of the plants. If you don't you're going to have major issues with even light coverage. Good luck.

I have a spider farmer and its 15 inches away. I would think that may be the cause but the lower bud sites are drooping aswell. Temp.is between 22 and 26 at all times and thw humidity varies between 39 and 55. the reason i havent cropped is becuase its an autoflower and i dont wanna stress it at all. Plus i habe 4 plants in little room so i didnt want them to widen at all. Its crazy. I think i may try and feed only ro waer for a watering or 2 but i got no signs of nute burn...thats all i can think of changing. I Would of thought this would of been a common problem. Thanks for the help m8

Oh yeah i watered him monday
and pot still feels heavy so reluctent to water again yet. Probably tomorrow eve a few hours after the lights come on