m0useanswered grow question an hour ago Its not just trichomes you check for harvest time.
Will also want to look at how much its drinking, its pistil dry back and how dense the buds are.
Ideally it is not drinking a lot as its done growing, the pistils will be around 80% dried and the buds are as dense as they are going to get, this is all in conjunction with the trichomes colour. Some times just one metric works other times need multiple.
You can harvest a bit before its window period. its still going to get you high. cloudy and amber trichomes are degradation clear ones have max thc in them. But its not just about THC. a mix of THC,CBD,CBN and w/e elce it makes is the goal. a nice melody of all. Leave it on the plant where all the trichomes are amber and it will be very sedative weed as most of the THC will degrade into CBN
Good Luck!