I begin full watering of my pots once the leaves reach the edge of the pot. Usually once the leaves are there then that means the tap root has reached the bottom of the pot and I start full waterings. Although I do water the whole pot like others have suggested when I do water even at early stages. I just focus it more away from the plant along the edges like others do at younger stages so I don't overwater and drown it if that makes sense.I’ve heard this too, but I’ve also read you can’t water til runoff until the plant is well established? I think I’ll go water around the edges with water/wetting agent/recharge PH ~6.5 til slight runoff