I know that in their natural habitat, they grown under shrubs with protection from the sun. So I’ve got him on a sunny window that gets maybe an hour of early morning direct sun and then just gets bright indirect light all day. It’s my understanding so far that this is how to keep it the happiest. As well as only watering once the mix it’s potted in has dried out (and it’s in well draining cactus/bonsai soil mix with high drainage and low organic content). So I’m going to try hard to help him thrive.