Hello ! Hard to tell you. They receive 2-3ml of terra flores a day but in how much water ? 1L as I can read that you give them 0.5L each a day !? To me it's looks like you don't really know if you give them enough or not as you can't check your EC/PPM level. You should grab an Ec/ppm meter as soon as possible , it will tell you how much nutrients you have put in the water and how much the plant received , and you will adjust your nutrient amount thank to that. But like Athos told you , if you still gonna water like this then stay at the same amount then increase a bit after the stretch and a last time before harvest (last feeding at least 7 days before harvest). I hope it will help you 😁👍