Be patient, and follow up with your specialist/technician weekly.
I was at 57 events/hour. Averaging 30s each. So that is spending half the night not breathing!
The first week(s) with the machine took getting used to. Numbers were high. Technician connected to my machine with a cel phone chip (I think) and changed settings. Continued to monitor my numbers from afar, and change my settings each week for about 6 weeks before we found my preferred settings.
At first the machine start at too high air flow and I couldn't sleep. He adjusted it to start at minimum air flow til I fall asleep, and it slowly ramps up to a high level and I never notice. Wife does not hear it at all.
Initially had me round 5-8/hr for a while after that. After a few months, got me down in the 1s and 2s permanently.
My dad was having high blood pressure in the mornings and trouble sleeping. Told him I was sure he had apnea.
Sure enough, he was in your range, in the 60s. He's now about 2 months in. Still getting used to it. But his numbers are going down, pressure going down too.
Don't be shy to try different masks.
My specialist let me try like 3 different ones no charge.
I started out with an under-nose model. Also grabbed one that covers mouth for that 1 night per month my nose is 100% stuffed from allergies.
Just recently switched to new under-nose model that has nose cushions that partially enter your nostril.
Best one for me so far. Got my dad one too.
FYI, my dad the first month kept using it off and on. I told him, if you don't use it every night, ALL night, you're wasting your time and making the process take longer. Once he finally used it 100% of the time, it didn't take long to see a change.
If I went from 57 events/hr to 1/hr, you can do this and probably never require surgery. Mine is attached to my bed headboard. I put silicone rubber underneath to prevent damage from the clamp.
Get one of these too to keep your cord under control. We both have one and love it. Silicone, got one of those cooking sheets from the dollar store.