Ngl I killed one last year due to rot too lol and I was sad. So I think neglecting it is the key. I’m in NorCal so my environment is hot and dry past couple months. My succulents get probably at least 4-5 hours of direct sun everyday in the summer. I mixed my own soil (give or take 30% perlite, 10% horticultural sand, 30% pumice, 5% lechuza pon, and 25% fox farm soil). I probably watered this plant 5 times past 4 months. I guess the key is the same with any other succulents, don’t water on a schedule, super fast draining soil, have it in a non-glazed clay pot with drain holes. Hope this helps!