Insomnia was one of my first non-sexual sides with PFS. About 1 yr. into my PFS, I also had a sleep study after seeing a sleep specialist. I went to him because of the PFS insomnia, which meant absolutely nothing to him, since PFS doesn’t fit neatly into his, or any other MD’s playbook. I knew the study would show sleep apnea, because I’ve been a heavy snorer since my late teens (until PFS, I never experienced even the slightest insomnia). Sure enough, the study revealed significant SA.
I started CPAP therapy right after the study (last August) and have used it every night since then. I no longer snore, but my insomnia is only slightly better. I still have 1-3 wake ups a night and rarely get more than 6.5 - 7 hours of sleep. It’s hard to tell if the CPAP did anything or whether my sleep has only improved marginally because of time.
I guess all I’m saying is that treating SA may help your insomnia, but don’t expect miracles. You may want to tell your sleep MD about your Fina use, but don’t be surprised if he disregards it. Best of luck.