Here is my reply
Morning OJH
I avoid letting my Coco /perlite dry out. Plants get droopy and it takes2gals per 5 gal smart pot of feed/water to get at least a 10% run off. When my plants are mature I feed every other day. Usually 1.5 gallery pot...Some require a little more or a little less.. I never feed just water. I believe drain to waste good for the plant in that it also flushes out salts in the Coco. My Coco /perlite mix - 1 part perlite to 3 parts Coco works well to drain. I like Vigoro brand As it is medium size perlite as well as Premium Cyco Coco ( having done many brands of Coco including bricks). I think my mix provides enough question, drain, etc.
When plants are younger I may go every 4th day. Basically I can tell by just lifting up the pot.also all get fed at the same time. No special cases.
As you know I use the GH Flora Trio, CaliMajic, Terpinator (following the GWE/Nebula chart. Add Liquid Kool Bloom when in flower. Never add any worm or bat castings nor teas. Just plain and simple😊