Fertilizer confusion

How many cc are in 2/3 tsp and is this all you suppose to apply to one seedling. Doesn’t seem like much fertilizer.

I don’t use nutes or fertilizer with seedling not till around 4 to 5 weeks do I introduce them

Oops I used the seedling booster. Also pistons have stated forming on my other plant can I consider it out of vegetative stage now.

That is the transition period meaning she’s starting to go in to flower 1st week of flower is when you see budlets forming