Not knowing more about what you have done and your growing conditions, I can only give you a general answer from my experience with soft cane den.
The most common reason for keikis production is too much fertilizer and especially too much nitrogen, and/or watering, fertilizing at the wrong times.
My den produces keikis no matter what but it blooms as well.
With dens, it is what you do from the previous Summer onward, that will determine the blooms for the following Spring.
What is your watering/fertilizing routine, do you give it a winter rest ...?