That’s tough to say, but if I had to guess maybe a week or so? I’d just kee checking on the trichomes every day to every other day to gauge it! Everytime I think they’re going to go amber fast they never do so checking periodically is key to success!
you are getting there, they are a nice milky cloudy look. so right around a week to two weeks. keep checking, the little balloons are the trichomes swelling with thc. have a happy soon to be harvest, you will be happy when the time comes