Anybody know how to remain logged in?

After 2 or 3 days, I have to login again. I've googled, but have not found any Lemmy setting that would allow me to remain logged in longer than this. I suspect people are going back to Reddit simply because they're always logged in there - month after month. I suspect there is a setting the instance admin can change. I'm hoping that Lemmy.studio's owner can answer this question... or anybody. Thanks.