watering wrong. just going to train superficial roots or cause weird rootzone issues. if not this grow, eventually.
when you properly water, take note of the volume. that'st he volume you need your automated system to use... if it's increasing each irrigation, as it should with a growing plant, you need to give a bit more each time. Having tiny plants in a large pot makes this a nightmare for no reason too.
you give the volume it takes. you learn that volume retroactively. it changes each time until the plant stops growing significantly. Err on the side of giving slightly too much while gone because the alternative is worse.