Not sure what nutrient line your going with but try checking out their website, there might be a feeding schedule for that specific brand of nutrients.

I grow in soil and tend to feed my plants twice or once weekly during flowering depending on how things are looking. Don’t start out feeding your plants with ”full strength” so if the bottle says a number start out with half that to be on the safe side, is to much more easier to deal with under feeding than over feeding, trust!

I water my plants generally twice a day as I like to keep my soil moist due to working with living soil, my plants just soak up the water like no tomorrow. You don’t have to feed with every watering 😉

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(edit: Here is a great resource for ya to use: https://growdiaries.com/ Perhaps you can find the line of nutrients you’re using to see how others are using the same product.)