BOBOVR F2 Fitness Facial Interface (Upgraded Version) - Compatible with Oculus/Meta Quest2, Soft PU Face Cover/Pad, Active Air Circulation Micro-Fan Ventilation to Reduce Lens Fogging

They sell facial interface replacements that have cooling fans, I’d give one of them a try. I use one of those to stop my glasses from fogging over. They typically require charging but using a BoboVR battery strap I was able to plug mine into the battery and run it all the time without worrying about it running out of battery. This is the one I used with the Quest 2: https://a.co/d/07wJNANz