6 weeks into the flower, my leaves are starting to turn brown from the bottom, do you think it's rotting? Should I worry? Or is it too bright? Should

Ohhhh geeez pasta. C’mon you’ve got enough grows under your belt to know what’s up. No, at six weeks into flowering, I wouldn’t do much to change what’s happening. The plant is just in senescence and getting ready to die. Your buds are already developed. Remember buds are the prize not fan leaves. If she’s consuming her fan leaves it just means she’s eating them to further develop buds. Just stay on track and finish it off.