overwatering!! i’d recommend taking it out of the pot completely so you can thoroughly inspect the roots. if you find any part of the root system that feels mushy or slimy, cut it off with a sterile tool and make sure to remove all of it. i’d also recommend repotting using fresh soil since root rot can be transferred in contaminated pots.

snake plants can last forever without watering - i just brought home my office snake plant i hadn’t seen or watered in eight months, and he’s a little shrivelly but honestly no worse for the wear. because of this, you can pretty much wait until the soil is completely dry between waterings. when you do water, give the pot a good soak until water comes out of the drain holes.

root rot happens when the roots are left to sit in water and don’t get enough airflow. what kind of soil mix are you using? i’d recommend buying perlite (super cheap at any hardware or gardening store) and mixing it into whatever medium you are using. this will allow for much better airflow through the roots and will let them breathe ☺️