To care for succulents indoors, place them in the brightest light you can provide, usually a south or west exposure if you have one. You’re doing the right thing by using a succulent potting mix and you should use pots with drainage holes. Water only when the soil has dried out completely, then water thoroughly and let the excess drain away. Succulents tend to do well in low humidity, which most homes have.

In winter, reduce watering even more and do not fertilize much. Watch for the two most common problems: too much water and too little light. You can treat the prickly pear much like your other succulents. If you have this native prickly pear, here is an excellent article about it: https://www.wildflower.org/plants/result.php?id_plant=ophu

Here is another article with general information about caring for succulents Growing Succulents Indoors | Yard and Garden

If you do move the plants outside, don’t put them straight into full outdoor sun. Wait until the danger of frost has passed, then put them outside in gentle sun or shade. Over about 10 to 14 days, gradually increase their sun exposure so they can adjust without burning. Once outside, remember that pots dry faster, so check them more often, but still let the soil dry well between waterings.

In Michigan, be especially careful with spring and fall temperatures. Wait until after the last frost before moving succulents outdoors. In fall, bring them back inside before cold nights and certainly before frost. Here is a good article about that process: Bring plants indoors now, but leave the pests behind - Gardening in Michigan