From what I can see it looks like you’re getting pretty close. Cant really make a decent judgement because the photos aren’t close enough. Need to get a good magnifying glass or a powerful lupe. I use a macro lens on a high res camera and its great. Once you get something that will give you a closer view it’s easy to see the amber trichs, they stand out and are obvious. I like to have about 20% amber. You may also notice
That there will likely be a higher percentage of amber near the top 1/3 of the plant. If there’s a big difference I have harvested the top 1/3 first and then about a week later the bottom. Works very well. Cut the top right before you’d water and the plant won’t lose so much. Tape the cut stems, then water really well and lower your lights a bit.
I’ve also noticed that some plants just keep making new white pistils even when there’s 20-30% amber. Don’t let that concern you. The goal of a female is to reproduce so if they haven’t got to do their thing they will keep trying as long as they can. Why you keep seeing new white pistils. But it’s also a good time to really start looking for any signs of male flowers or “ nanna’sâ€starting to form- their getting frustrated and are perfectly capable of generating male flowers if stressed, or if they feel that’s necessary to develop seed. But even if you find a few indications of male flowers or “ nannas†you’re so close to harvest there won’t be much time for seeds to develop. You could also trim the dead leaves to open her up a bit. Happy harvesting- won’t be long!