Hey Jayou, you're absolutely right about avoiding runoff right now, but what I can see is you're actually overwatering slightly each time ! Since you're in such small pots (3L pots, really?) you should be watering something like 600ML max, but three times a week, preferably at "sun up". when "day breaks" the plant naturally sucks up more water, so it's better for the plant if you "follow the cycle" by feeding in the morning, rather than at night. Beyond that, to make sure you're watering enough and following the wet dry cycle correctly, i suggest you use the "lifting method" to assure you're not over or under doing it. Hope this helps ! 🚀