Purple lemonade auto

So on day 21 I noticed all the girls, Purple lemonade,gelato and original sour diesel from fastbuds all started showing pistils thus letting me know they were heading into preflower, at this point all ive had to do is water and this simple approach is just that simple, and easy. Not having to mix any nutrients means i spend less time watering and having to really maintain anything in here. I was hoping to get at least another week or two of veg time to be able to lst her more effectively but its an auto, its in her nature to do what she wants when she wants. I have been watering at a ph of 6.8 and since her leaves have reached the edge of the pot means her roots have as well so they dont need to search for water anymore and i can saturate the whole pot now every 4 days or more. I cant quite remember how long it was taking the soil to dry out.