I can not grow pothos to save my life! The leaves at the top are always turning yellow and falling off. I water based on the Plants schedule, and I can't tell if they have pests. Sometimes I see almost microscopic little dots on the leaves, but no webs so I'm not sure if it could be spider mites. I've had spider mites on other plants before. I have two pothos in an east-facing window, so they get morning sun.

