I’ve been following VPD with mine. And by that, your RH might be too low for that stage of growth. Lift up the pots, if they are light they are underwatered, if the pots are heavy let them dry out for a bit.
Good luck 🤘🏼
Normally droopy leaves say to me,,, overwatering, but its possible they are to dry too....
https://www.growweedeasy.com/drooping-over-water-cannabis-vs-under-water-cannabis
for troubleshooting by yourself