Nutes...

I have a nute question I was hoping to get some answers to. I actually think I burned my girls a few days ago by 1st putting the nutes on before I should have (too early) and 2nd by putting too much on. Anyway what I bought was 24-8-16 water soluble packets that are supposed to be mixed with one gallon of water. My question is at the 3 week mark (when I should've started feeding) what would be the amount of this mix I should put on the plants?

Always start with 1/4 the recommended and then work your way up to 1/2 strength and then finally to full strength. Give them nutes every other watering. (I wouldn't feed them more than once a week)