Totally depends on what type of grow you’re doing. What is your medium and will you be feeding synthetic or organic??
When I started, I used soil and was intent on feeding synthetic bottled nutes.
I ended up w/ 15 bottles of this and that, with plants that did OK, but hardly worthy of a magazine cover.
My luck changed when I decided to move to an organic grow. I amend my medium at the start and only “feed” a couple more times until harvest. I simply water when needed and sprinkle some more dry organic fertilizer on top 2-3 times over the course of the grow.
Works for me.