all part of the process, just using every bit of nutrients stored in the fans leaves usually especially if its coming to the end of its cycle and you've flushed to water. Check the trichomes and it might be sooner than 3 weeks
As long as they are starting from the bottom up you are fine, once i saw one I clip it (cut by flower not stalk) when they start that they are just using up energy you dont need them.
Yea I gotta get another scope lost mine but thanks 4 the input I was really worried for a second and I didn't flush cause I only used nutes twice in a 3 1/2 month spane
I've let plants nearly completely die ( fan leaves and water leaves that is ) before I chopped them. My thought was "hell, I spent money on nutes, by god you're gonna use 'em all ".......It's not a problem, it's not like your buds are gonna die before the leaves do........
I have a plant that (I fucked up) all of the fan leaves died and some of the sugar leaves too. But she produced some fine looking bud (I'm harvesting this week), so I wouldn't worry about a few fan leaves drying.