Strange drooping

Hi I've growing an auto flower 20/4 and I noticed that the plant is droopy ...let's say I turn on light at 6 am and it's droppy till 4pm after that the leaves are very pointy .what could it be?

It has pre flowers and its growing very fast

And only the middle fan leaves drop

How often do you water?

Raise your humidity is my first guess without having all the date.

yeah i cant comment on low humidity. mines usually too high

My Bubba droops all day with low RH, I raised it and BOOM she's standing 45' leaves up to the sky.
This is most likely your issue. Unless you keep the medium soaked!! then it's overwatering the droppy shit and you're killin the plant slowly starving the roots of O2

even if you let the top dry and then water though thats not enough. a lot of people make that mistake. you want to stick your finger a couple inches in the dirt to make sure its dry before watering. not so deep you disturb roots obviously. ive had plenty of overwatering probs in the past