Clearly started flowering after week 8 although it had a rough start I have been guessing that due to a slight mistake at germination I knocked the whole process back about 2-3 weeks. However at 8 weeks or day 56 she was looking extremely heathy at 30cm tall and like a small Christmas tree !!
My bluetooth Auto has been growing for 84 days now the flowers are thick and firm but almost all the pistils are still totally white.
I was expecting expecting to harvest by now should I ? or should I wait for pistils to change colour ?
Just a sidenote, going only by your pictures, you still look 4 weeks away at a minimum. As an indica dominant strain, you will need 9-12 weeks after the first pistils showed before you are ready for harvest.
Usually almost all the pistils will turn orange before she's ready to harvest but occasionally they'll stay white until you dry them. In this case, you need to check the trichomes. Clear trichomes are useless, you want almost all to be cloudy with 10-30% amber.
Use a loupe and check the tricomes, but in my opinion just based on the pics you have up, she is not ready yet, but worry about tricomes, not the pistils.,