Poor soils are no problem for succulents. A failed attempt to propagate a sick succulent will likely result in failure, or a very long recovery process. You can use the same cutting method that we've used a million times to remove the mother plant. Although succulents can survive for long enough to grow root hairs, this is not a major problem. It's best to make transplanting easy. For survival, it's best to use as much natural light as possible and to keep the plant from being too hot or too sunny. The plant has absorbed too much water, and it cannot take anymore.