Double xl Watermelon Weddingcake Autoflowering

What's there to report? My plants drink 1.5L twice a day - I have the impression that they could be losing their leaves every day, but I have to restrain myself a bit - they are automatic seeds and they are said to not be able to handle a lot of stress; take a look yourself - the buds are slowly taking shape. Unfortunately, my automatic drainage system is not yet available, so I have to carry on watering by hand every day. I go to the limit with the fertilizer dose - it has worked without any problems so far with the osmosis water. My next grow will be with regular seeds - I'm not interested in quantity but quality. Let's see how the ladies develop. When does it make sense to remove all the large leaves - is there a guideline? My observations are that the plant on the right is taking the leaf loss well - the one on the left is a bit difficult. :-) When I compare the bud structure, I see that the plant on the right is producing or starting to produce thick buds - the one on the right has rather thin buds. I have no idea why this is the case - the only difference is the distance to the lamp. The lamp runs at 100% with sunrise and sunset functions. The plant on the left is larger and is 50cm away, the plant on the right is a bit smaller and is 60cm away from the light. It's annoying that I can only water twice a day - 2l after sunrise and another 1l 10h later; however, this liter only contains water with CalMag 2ml/L. Thanks