Beginner Gardening: Rainbow Peperomia Dying? , 1 by Luna_510

Luna_510 wrote:
My Peperomia was doing so great, growing and growing new leaves and older leaves were getting big. It was about 12 inches tall when over the weekend I found it with about 6 fallen leaves. This has happened twice now and both times over the weekend. I water it on Friday and when I come back on Monday it has fallen leaves and more fall to the touch. Also, some of the leaves and stem esges were dark and felt wilted. I know they get enough water and the soil is not dry.
Any suggestions on what I can do to rescue it?