If it were mine, I'd repot in fast draining cactus type soil. I often mix perlite into that. Then let it dry well and only water sparsely once in a while during the winter. I bring my golden barrels inside in winter in NM and water them maybe twice all winter. Once they go outside, they get more regular water, but nothing that will make them stay wet. Good luck! I'm betting it will make it just fine.
