Get a microscope or zoom in with a good camera. Cloudy trichomes with a mix of amber is what i go for. At one point you will notice it start to smell a lot stronger and the buds should be hard with at least 50% orange hairs. The white hairs will turn orange when its drying. Based on the pictures id say at least another two weeks. If you want to know if the nutes are gone take off a fan leaf and lick juice. If it tastes like water its good to cutdown aslong as the other variables i mentioned are good as well