Interesting...I was diagnosed with mild sleep apnea in 2018. I tried the CPAP at which I was unsuccessful as I couldn't tolerate the pressure. My Cardiologist/Electro Physiologist thinks the sleep apnea could be a factor in generating Afib episodes at night so I just had a new sleep study last week during which they used a BIPAP (or bi-level) machine which was a revelation as I slept the rest of the night with it and woke up feeling better than I have in years.

With the BIPAP, you can set it for two different pressures for inhalation and exhalation. We are awaiting the full report from the Pulmonologist and I have requested my doctor to prescribe the BIPAP machine.

I'm not sure if/how sleep apnea would be related to neuropathy. Of course, neuropathic symptoms can also include circulation issues which you say you don't have. I think in my case circulation is a factor.