daRealOGanswered grow question 2 months ago Zooming in (a LOT) the images you posted i couldnt see any amber trichomes at all so based on that and on that alone i'd let it go for a week or two more, keep checking them daily for amber trichomes, you want around 15~25% amber to cloudy trichomes when harvesting.
The late flowering stage is like that from my experience, they seem to be doing nothing for days on end, but trust the process, they are doing their thing... monitor the trichomes daily and you will see the evolution of the trichomes "maturity".
Congrats, the flowers look beautiful!
happy grow!