Hi - thanks for everyone who replied.
It's been 3 weeks now and I haven't seen much change with the trichomes. Leaves are mostly yellow now (some plants more than others). Pistils are all dark.
I am still giving flowering nutes (full strength), so I'm not sure if I should reduce the concentration (House and Garden nutes).
Temps have been around 65 - 67 during daytime and 62 - 65 at night. Humidity has been around 38 - 45. Light spectrum is mostly blue.
I am not sure how long the harvest window will stay open. Any recommendations? Keep waiting? What signs should I look out for to indicate that the window is closed or closing? I'd hate to miss it because I was waiting for something that may not happen....
Thanks again for your help