when to start feeding nutes with coco?

So I just started a Bloody Skunk Auto from Sweet Seeds.

I am using cocogro from botanicare mixed with perlite about 70/30 mix.

They just sprouted and are on day 4, I am using botanicares pure blend pro line.

Botanicares Cal-Mag
PBP Grow
PBP Bloom Soil Formula
Clearex for "flusing" inbetween nute changes and last two weeks before harvest

This is my first auto and coco grow, so I'm pretty new to everything.

i start feeding right away in any soil-less mix, unless it has a lot of amendments in it to begin with, then i might wait a couple of weeks, but the very first time they look hungry, they get fed.

Maybe worth mentioning, most autos are light feeders so start with a weak nute solution. Autos don't recover well from stress.
Also ph every time you feed!

Maybe worth mentioning, most autos are light feeders so start with a weak nute solution. Autos don't recover well from stress.
Also ph every time you feed!

I see. Thanks for this!