The leaves soften and eventually droop as too much water causes the cells and tissues to lose their structure. Delay watering and remove affected leaves.
The peace lily requires high humidity levels (over 60%). However, if the humidity drops below 40%, the plant will perspire too much, and eventually, the leaves will droop.
You can remove mealybugs by mixing the soap with peppermint essential oil and spraying the plant. Give the plant some time to adapt after transplanting.