Leafs are turning yellow

Hey bro it's kinda hard to say for sure without a diary, but from the look of it, I'd say early magnesium deficiency, that yellowing between the veins is usually the giveaway. Could also be slight pH drift or lockout, even if your input is 6–6.5. Runoff can tell a different story. You using any CalMag? If not, I’d add a bit just to be safe. And yeah, 1L every 2–3 days might be too little depending on pot size, if she’s drying out too fast, that can mess with uptake too. Would be easier with a full diary, good luck with the rest of your grow bro 🤞🍀♥️

What kind of soil are you using

Add some grow nutrients and you are done.

Lack of potassium, but I don't know why the leaves twisted like this, maybe the ph is too low, don't lower it below 6.2