Troubled peace lily
I rescued this peace lily from certain death last year. When I got it it had been left to die - college students moved out and received no watering. So it came back to life and now is dying slowly. The leaves are turning brown and sections are just drooping. I water weekly and have it in indirect light. I also gave it a quick start planting tablet because upon inspection of a previous wilted section I found very little root support. Please advise.