Yes i used superthrive every watering....and sometimes with cunt and whore i had to water 2X a day :)
i always poured just cunt hairs worth in the cap, then dumped the cap in the water.
I would esitmate i used prolly 4-5 drops per gallon. Whether a seedling or full blown mother sized plant, the ratio should be the same.
The amount of water you use will determine how much gets to the plants.
Sounds like the plant is responding. You'll know for sure in a few days.