Personally,although i do grow organic with no chemicals, but I feed compost tea up till the last week or two. While yea, don't stress if u get the yellow fade and its a good indicator the plant is nearing the end, but I don't care to make the plant want nutes and not have them. The science behind the fade is the plant is making every last ditch effort to get pollinated. so it pulls all available nutes from soil/and then from the plant. Nice healthy plants make nice healthy dense buds is the bottom line.
This makes sense to me, and I've never been comfortable with this notion of starving the plant during flower. I understand that many believe the nutes adversely affect flavor, but I've come across others who say this is rubbish. I've gone ahead with this protocol because many experienced growers have advised me to do it. next time around I'm going to do a sided by side comparison of feed vs no feed on two identical plants and see what the real difference is or isn't in the final product.