[Cynthia, Prescott, AZ]

First thing you need to work out is the watering schedule. While the Den is growing or blooming, you can water it before it dries out completely. Flush it well with water while watering. When it is dormant, usually during winter, but sometimes Dens don't bother to slow down, you want to let the Den get very dry between waterigs. So, when the last leaves at the top of the latest cane unfold, and no new little leaves are evident at the top, and no bloom spikes growing, cut way back on watering. You can let them be dry for several days to a week or two, not criticle. When you see a new growth starting at the bottom, start to water more again.

Dens like a lot of light, about 50% of full sun, so find a sunny window with a little shade added. Fertilizing is covered in quite a few of the threads.