Your plants look healthy enough which means whatever you're doing is great. But basically in their first couple of weeks life as a seedling I will fully water the pot before planting and then just a dribble every day and keep them in a moist plastic dome, spraying daily. As they and their roots get bigger and enter the vegetave stage, their need for water drastically increases and would water 1-2 litres every 2-4 days. Only ever water once the pot feels dry or nearly dry, you can lift the pot to feel how heavy it is or isn't. And in flowering stage the same, towards the end of flower their bed for water and nutrients slows right down. Hope this helps a little