ok, never heard of anyone watering like that before
I use a lot of water so all the soil gets a really good soak, then let it dry out as the top part of the soil drys, day by day the plants roots have no choice but to grow down quick to get water
also don't give the plant any food for a few weeks in a pot that size, so the roots have to grow and spread out looking for food.
what you are doing is making it easy for the plants so the roots don't need to grow as quick and if your feeding then the roots they will grow even slower
you want short plants with a large root mass as quick as possible (as you on a 12/12 from seed) and then you buds will get more food in late flower so they will grow a lot bigger
larger root mass gives you a larger yield