A really beautiful Cuprea!
Some time ago I bought a very small Cuprea myself and almost lost it. I found it difficult to keep the soil continuously not too moist, but not too dry either. When there was no leaf left, I repotted it in a Lechuza planter (a combination of baked clay granules, water reservoir and self-watering wick) and it recovered. I guess that keeps the right balance and avoids root rot.
Maybe you could put another stick on top