I have my DR near a south facing window on a table. The photo included shows what sunlight it gets. Does it matter that the caudex doesn't get the light, and only the leaves?
I've seen no growth to this plant in about a year, obviously winter there was nothing... but even the new little leaves I've seen have turned brown/shriveled and died.
I water it with RO water and fish tank water every two-three weeks. More water?