Two years ago I moved and I got a cheese plant off someone's healthy plant, but now it is being eaten by something. There are no signs of anything on or underneath the leaves.
Cheese Plant Is Being Eaten
Certified GKH Gardening Expert
Indoor or outdoor plant? If outdoor, it could be slugs. They are primarily nocturnal feeders, so they may be not noticeable during the day.
Are the leaves chewed down to the stem? Are the leaves on the ground after being nipped off at the stem? Are they nibbled/chewed on the outside or are they riddled with holes? Are the holes or small? If you can send a photo that would assist in identification.