Do not overwater your plants. If you see that your plants are just very droopy then you may want to cut back on the watering. Sometimes that is the easiest fix - Put your plant in sunlight for a few days and see if that will bring it back to life as well as give it tback it’s color that has been seeming to fade over the past week weeks. I always seemed to overwater my cactuses - and that always seems to get them back to what they were like before I overwatered them.