you can have amber trichomes at any point in grow... all of that stuff is on variable timelines of ripening.
you have a very long way to go. see all those white, long pistils? your buds don't even look like normal buds you buy.. just take it a day at at ime. you have several weeks remaining. There;s barely any visible plump, yet.
also, don't look at trichomes on the leaves.. only calyxes.
Trichomes
pistil coloration/ "shrinking"
density
use all three obsevable metrics to guage when to harvest. "shrinking" is an optical illusion. The calyxes plump around the pistils, which makes them look shorter. they also die and coil up near end, too. Some buds are "hairy" but most won't be.