Can you rescue a plant from overwatering?

Yes, there are several ways to help your plant recover from overwatering. However, your first priority is to get your plant out of the overwatered situation. To drain excess water and let your plant stay in a dry environment for a day or two.

1. Move your plant to a shady area even if it is a full-sun plant. Remove any dead or dying leaves. These should be easily recognizable.
2. Check your pot for proper drainage and, if possible, create additional air space around the roots. This will allow oxygen to reach the root zone. Remove any dead or dying roots and keep only the roots that are healthy.
3. Water only when the soil is dry to the touch, but do not let it get too dry. You should also seize all fertilization at this point until the plant is healthy again.
4. Treat with a fungicide.