I'm a newbie but to me the soil and fabric pots look kinda dry. As far as overwatering the best advice I've seen is "If the leaves droop but the stem supporting them is up, it's over watering (or some other issue). If the leaves droop AND the stem holding them droops, it's under watering(or some other cause). Your leaves only have a slight droop (if any), but the stems look upright, no drooping. Look ok to me, but again, no expert here, just my 2 cents.
They don't appear to be overly wet unless you're watering too OFTEN and the bottom third of your pots are saturated depriving roots of oxygen. You can't over water a well draining pot and medium, but you can water too OFTEN which can result in a variety of problems from mold, mildew, pests and nutrient deficiencies you see posted on this website, because the roots can't do their job. From eyeballing your pots and medium from across the pond, I'd wait until they got down to about 6-7kg before I watered to a slight run off. Good luck.
Best advice for watering in my opinion is the weight of your pots. If you can accurately measure the weight dry , brilliant . But if not pick your pots up after watering so you get used to how heavy they are , then when you think the plant needs watering , pick the pot up and see if its much lighter. You can also poke your finger an inch down into the soil and see if theres moisture . If there is dont water until it feels dry. Happy growing
Watering too often is a very easy mistake to make. I always felt like I wasnt doing enough for my girls . But in reality I was doing more damage than good before
You have a grip of plants. Might I suggest taking one or 3 plants and skipping one watering or pushing it one day out in advance and see if you like how those plants respond to it? thats one way you’ll answer your question for sure without guessing