Wanted 3 week veg. Amnesia autoflower and special queen fem. Did i make good watering?

[314159]

 

[314159]

I make watering once per week with with 1liter of water with some nutrients per plant..is 1 liter per plant in 20liter pot enough?when should i start to add more or if i have some better option how freqently can i do watering..i dont know first time i make the plants..i buyed a soil and didnt add any nutrients until plant has 8-12 pairs of leaves..thx a lot..
I will try to update photos through the end..
I use sensi a+b plus some root liquid soil from the same brand..

 

[BudBloomer88]

Looking good, man. Just keep that watering schedule consistent.