There is no lock preventing you from changing your own pressures if willing. Go here https://www.apneaboard.com/adjust-cpap-pressure/change-cpap-pressure-settings-adjusting-your-machine-with-a-clinician-setup-manual Download the clinical manual for your machine and it will show you the settings tha...

Thanks for your input Pugsy & katestyles. My DME found the prescription and reset my machine to 13 cm this morning. I tried it for a few minutes after I got home. It is a little hard to exhale but I guess I'll get used to it. Last night (before the change) my AHI was down to 7.25 (not good but a lot...

Sleep center titrated pressure to 13 cm after they measured AHI of 28.6. CPAP provider left the default setting of 4-20. My first two night my AHI was 12-13. Not good. I am going to talk to the machine provider about changing the setting. Don't know why this didn't use straight CPAP of 13 cm per Dr....