Hello yomi23,
I will quote another grower: "Whenever you think that your bud is ready for harvest, wait another week".
All trichomes should be milky and you should also see around 10-30% amber everywhere you look. If only the majority is cloudy and you see no amber whatsoever, that means it is not ready and it still needs some time.
Good luck with your project, I wish you all the best! 👽