Pistils not receeding, just reddish brown, any way to expidite?

How can i expidite the recession of pistils? do some strains no recede? seems like its just stuck there... and not fionishing. its 2 months in floweirng

should i not feed it anymore to indictae to it, its life is done?

suggestions?
HELP!

Some strains need another week or two; however, if you cut the bitch off on water and nutes you'll see some die back. More nutes? nope you always flush just good old water. I just had an ATF GOD grow bud on bud on bud and learned the trick. Much Success.