i think this is a duplicate post.. basically the same as this one: https://www.houzz.com/discussions/6054297/help-i-can-t-keep-my-pothos-plant-happy-or-healthy#n=2

Looks to me like you’re not giving it enough water or light.

Thank you for your input! How often would you water a plant this size? I started off watering when the first inch or two of soil felt dry. When the leaves started browning, I was advised that I was watering too much, so I cut down significantly.

I'm currently only watering about once a week to once every week and a half. When I water, I make sure to use filtered water that has sat at room temp. for 24 hrs and I make sure to water until it comes out the bottom.

I am moving the plant today to a brighter spot, so hopefully that will help!

First of all I think your plant needs more light. If you are watering it too much, the leaves will turn yellow and fall off. (Mine does). Also, unless you really like your plant to hang and trail, I would trim the hanging down branches about half way up. The plant will produce another branch from with little brown node at the base of the leaves (on the branch). and look fuller. You can put the cuttings in water and they will root and you can have another plant or two. About the brown tips, I think it just needs more light. Mine do best in an East window on a small console table.

Don't let the vines get too long before you trim them. Water after the plant completely dries out.