What would cause the Christmas cactus leaves to become soft, lose color and fall off?
Christmas Cactus House Plant
Certified GKH Gardening Expert
This appears to be an over-watering issue. Please let the soil dry out on the top layer before watering again. Make sure to put the plant in bright filtered light, such as near a south facing window. Here is a link for more information: https://www.gardeningknowhow.com/ornamental/cacti-succulents/christmas-cactus/advice-for-christmas-cactus-care.htm