Last thing, and the one that matters most in week one: the point of all this is not the numbers. It is whether you feel better in a month than you do now.
If you are struggling — genuinely cannot tolerate it, or you are lying awake fighting the machine every night — that is a thing to raise early rather than endure quietly. Masks get changed, pressures get reviewed, humidification gets adjusted, and all of that is normal early-therapy housekeeping done by the people looking after you.
Nothing on SomniTalk is medical advice. Talk to your own clinician before changing therapy.