@gramps I wish I had some suggestions for you. My CPAP program only shows clear airway apneas, hypo apneas and obstructive apneas. From what I've read about central sleep apnea is that it's somewhat different than OSA and usually people with CSA have an underlying medical condition. Is your diagnosis central sleep apnea? Here's more information I found when I was trying to understand the difference.

Obstructive vs. Central Sleep Apnea: Key Differences and Treatment Options: https://www.aastweb.org/blog/obstructive-vs.-central-sleep-apnea-key-differences-and-treatment-options