Late veg is 650-800 , depending on strain n size. I do 4 transplants to get to 10g pots.
In veg I usually water every other day, but once the roots take to the 10g pot, I usually will have to water it everyday , (last week) and that’s what I want , the more wet dry cycles you have the more they will grow .
When it’s just water days , I’ll add cal/mg to the RO water,
I also add a enzymes sometimes to help brake down junk in the roots and act as a wetting agent.