Zkittlez - Feminized - First Indoor Grow

Plants have grown their first fan leaves, but it's hard to see actual growth when you look at them several times a day. I am worried that they are not growing fast. I have been watering them with a spray bottle but started adding some water that was a 6 tsp/gal solution of Big Bloom. I am still lost at when to transplant to the large pots and how much to water them exactly. I am anxious and impatient, I want to see them grow big quickly.