Snake plants are famous for surviving neglect, which is why it feels insulting when one starts falling over. The cause is usually root or light related.
Quick Answer
Snake plant leaves fall over because of overwatering, root rot, low light, a loose root system, physical damage, or a pot that is too large or unstable.
Overwatering
Snake plants store water in their leaves and need soil to dry well. Wet soil can rot roots and soften leaf bases.
Low Light
Snake plants tolerate low light, but very low light weakens growth. Brighter indirect light helps leaves stay stronger.
Pot and Roots
A newly divided or loosely rooted snake plant may lean until roots anchor. Use a snug pot with gritty, fast-draining soil.
What to Do
Check the leaf base and roots. Remove mushy leaves. Repot if soil is dense or wet. Stake healthy leaves temporarily if needed.
Bottom Line
A falling snake plant is usually not thirsty. It is often too wet, too loose, or too dim. Fix the roots and light before adding water.