Question: how do you transplant succulents indoors?
Answer: Gently loosen other soil, and sift new soil around the roots, using your fingers or blunt end of a pencil to tamp it lightly as you go. Cover the surface with sand or gravel or grit, and allow the plants to dry a few days before watering. Caring for succulents indoors means not coddling them as you would, say.