plants do droop as they sleep... and for you to go in after seeing that giving them extra water, knowing what you now know about the importance of letting them dry all the way to the bottom, you should have known better. If you had picked up the container and felt water weight, you should have known not to make human assumptions about a slight droop. You really got to stop messing with these plants every day, loosening soil and making assumptions about them. It is possible to kill them with kindness. These are weeds... they respond to adversity, not kindness. You still have not grasped that fact. How are you going to get them to grow effective roots when you keep treating them like they need to be coddled? As far as your last question, no, you should not go in and mess with the soil as they are growing. You should however have a soil that is able to drain easily... as we discussed before, with about 20% perlite in it. Roots Organic 101... the best soil made for cannabis IMHO. Second best, Fox Farms Ocean Forest. The lack of professionally made soil... that is the biggest problem here... that and magnesium and an over enthusiastic gardener who cant seem to let them dry out.
a last thought. If you had effective roots in those containers, your plants would be thriving at this point and you would be hard pressed to keep them watered. Your complaints to us would be that they dry out too often, and that every night, sometimes twice a day you were forced to water them because they would start to wilt. The hot african sun would allow those plants to suck those containers dry in record time, and we would be advising you to get more soil under them, to increase your buffer time between waterings. You do not yet have this problem. You keep drowning your roots, forcing them to atrophy.
And... (i know, another last thought) those bugs you are dealing with in the roots.... they love all that water and never drying out. If you could actually dry out the middle and bottom of those containers where they are living, you could kill them. You got to be cruel to be kind when it comes to a weed.