If your succulent is showing brown spots, and you normally keep it in a sunny spot, then move it immediately to the shade. You can test your soil for dryness over the next week. My poor plants are frozen because it's been so frigid lately. If it is cold and rainy winters in your area, you might be able to place your succulents underneath a covered porch or overhang from your roof. If you are going to repot it, be sure to use a good-draining succulent soil. They need more sun than they are likely to get indoors. To ensure their health, place them near the most bright window in your home.