Green Crack Auto

So i have been on holydays the past three weeks and when i came back, the three plants grew substantially with very little signs of starting to bloom. up to this point i rarely collected serious information about how to grow professionally and so i grab my phone and fry my brain with a couple of hundred of hours of youtube. PH of the soil? washing? fertilizer? maximizing yields? i start to panic and want to give my babies the best i can. they deserve it, i deserve it. i started fertilizing them every two days, making sure the soil really dries out before i give em the cocktail. i really used only very little fertilizer as the soil already contained fertilizer itself. i realize i have no idea what i am doing and decide to take a close look at the plants each day. Aren't the leafs at the bottom starting to turn yellow? are my plants growing to slow? what if they don't start blooming before the weather turns apocalyptic again? Kevin, the smallest of the three (without drainage layer) really struggles through the day, but i decided to give him as much love as he needs so that he doesn't get jealous when i dryhump his beauiful sister.