First time LED

Hey gang! The girls have entered the preflowering phase 🙌 I worked a little more on LST over the week and I'm happy with the way they've branched out, but they generally haven been looking a little down the last days. They've been growing, but don't look very healthy and there's not as much stretch going on as I expected / am used to. Maybe, aside from the overwatering issues I've been trying to sort out, something to do with a sudden temperature drop we had a few days ago...? On that day min. temps were 16º C and max. temps have also been hard to keep over 22º C on some days. They've been taking a little more water now, giving them 400ml each every 4 days more or less, but mostly look droopy the 2 days after. I made some holes on all sides of the pots to help with areation, hopefully that'll help! Yesterday was the last watering of the week with only water, enzymes and a little CalMag. Will start gradually cutting back on veg nutes and introducing bloom nutes over the course of week 5. It's all been a little discouraging, as I was used to having good results with a 250w hps setup, but hell - I know I can have good grows with this setup too! Just need to learn a little again, and I'm fine with that 😄 I'm sticking with this grow until the end and will see what happens / what I learn from it 👍 Thinking about changing a few things before my next grow, to help keep temperatures up in this cold growing space and hopefully have healthier plants: - Replace my exhaust fan (145-187 m3/h) and use something a little weaker - Possibly switching to fabric pots for better areation of the roots - Maybe getting a second 14w heat mat. Thanks for looking! Take care 😉