Your peace lily looked upright yesterday. Today its leaves hang over the pot. Check the potting mix before watering: peace lilies can wilt when dry, but plants can also wilt when overwatered. Drooping alone does not tell you which action to take. University of Maryland Extension explains this watering trap.
Start with the plant as it is now. When did you last water? Did the pot drain? Has its location changed? Those details help you choose a useful next check.
