If you have a nute build up or lock out, ur gonna have to flush your soil with clean water and your problem should go away. I would do it immediatly if the leaves get worse. letting your plant sit in the same mix and foiler feeding will not help esp when ur using more nutes. when u got a burn going u want to add just water. Your plant doesnt look overwatered, u would get a droop just as if you didnt water. It looks like its just got a nute lock out making the braches little weak. It really doesnt look bad at all though. most ppl wouldnt worry about it too much.