judging just based off the looks i bet you that it's over watered. why? the leaves look droopy and curling but look stiff. if they are under watered they don't look stiff they look like someone sucked the life out of them and are pretty flimsy.
i do 2 things to check moist level 1. weight test which im still highly unsure of as sometimes they feel light to me but still dont need watering so i use #2. which is i stick my index finger as deep as it can go without shoving anything else in if my entire finger is somewhat dry but not bone dry that is when i water. if i feel any sort of moisture i hold off on watering.
what i also take into consideration for my grow is im in flowering i dont have the lights on for X amount of time anymore ( i was running 24/0 idk what you run ) when you switch to flowering you reduce said amount of like and in my case i reduced it by 14 hours ( im running 10/14 flowering ) so that extra 14 hours of no light will affect the moisture. it basically keeps the plants more hydrated for a longer period.
what i base the moisture at as still too wet? imagine a new bag of soil that isn't dried out. you open it and it feels moist. not soggy or muddy but just moist. at around that moisture i give my plants 1-3 days extra and keep checking daily before watering. this is just what i do i've over watered my plants to death so im a little more careful but this grow has been going great so far as watering goes. i never measure my water i just eye ball it to 1gal and water til it's all gone. the smaller the plants are the less water i use. i got 2 plants around the size of yours in 5gals they take up 1gal total for the 2. with run off of course.
