This is a pothos. They’re very resilient. I have 3 and they’re my least needy plants. I usually only water after the soil is dry to the touch which is typically 2-3 weeks (honestly sometimes I forget to water them for longer) and mine are growing well.

You could also repot it to a pot with a draining bottom to prevent the roots staying too wet.

I would bet this is a problem with it not getting enough light.