This bloom has been stuck for over a month looking like this.
Can I coax them to open?

Assuming it is getting the appropriate amount of light, temperature and water, I would just wait. Or perhaps moving it into a brighter spot?
Big Bill, are you reading along?

Bill thinks temperature! These Dens are warm growers and perhaps the temperature is a bit low. If the buds were wrinkled that would have indicated lack of water, but they are not.Also, looking at other foliage nearby, there is enough sun.
So, most likely temperature related. As long as they are firm and healthy, they will hopefully eventually open.
Thanks Bill! 👍

Mike, just wondering, is anything happening?

Nope

Is it time to threaten it with the salad fork?