Is this normal?

First timer here! I’ve got 3 plants on the go. 2 autoflower and one feminised. The leaves on my feminised plant curl down at night. I’m guessing this is normal? She’s two weeks from seed, I’m growing outdoor and on the windowsill.

dechlorinated water PH 6.3.

(it’s not from overwatering as they drooped before I watered the dry medium)

If they get to dry, the leaves will droop, that looks like what's happening in the first image. You will learn with experience that the leaves will naturally droop at night, but it has a different "look" than dehydrated plants. Something else, be careful growing outdoors in pots, if the pot get's direct sun, it will cook the roots. So you will either have to plant in the ground at some point, or figure out a way to shade the pots while letting the plant get full sun. Good luck.