I’ve got a pothos at my office that I need advice on. The top, closer to the pot, is getting yellow and has had some spots for a bit. Whereas the ends seem healthy and green and wonderful! I know pothos’ do that - the ends being really healthy. Is there something I can do to help the other part of it? It is in a pot that has a drainage hole but I have it plugged. So I’m sure that’s one step - that I need the drainage hole right? My desk doesn’t have natural light too close. If the person across from me opens their door and has their blinds open, it’s probably 10’ish feet from some natural light. First pic is the top with the yellow and spotted leaves. Second pic is the healthy nice green leaves. Thank you plant friends!!!