This is her, I seemingly don't know how to post pictures better. She is GSC photoperiod in an earthbox with buildasoil 3.0. Ive been keeping her temp and humidity fine and have been top watering a half gallon a day in a circle around the plant.

This is my first grow and I'm unsure if this looks right. It's 15 days since sprouting and I'm still top watering waiting for it to grow as tall as the earthbox before filling the reservoir the first time as I've seen suggested. Is she growing slowly or am I over thinking it?