Nice looking plant- but I agree, too early to harvest- here are the things I look for:
white hairs curled in and turns color (40% or so)
most trichomes are cloudy
some trichome's are top heavy and they lean over
percentage of amber trichomes to personal preference.
plant is drinking less water.
I often don't get all of the above, maybe I'll be away-or need the tent space- or can not hold out anymore, lol
The good news is the plant is still growing and adding bulk, getting heavier.
It's a waiting game of patience.