The White Widow adventure

Having issues yet again. Not sure where I’m going wrong. Could just be waiting for the nutrients to break down. Just top dressed yesterday after two weeks. So makes sense that it’s a little deprived. However the rust and yellowing has been a thing all along. Brown spots. Seems like it wants a ton of nutrients and I just can’t give it enough. I would not recommend this for a beginner. I’ve heard and have read it’s hard to grow from others.