Owlsight 64MP OV64A40 - Unable to change sensor mode

Hello,

I am trying to run the Owlsight 64mp camera on a Raspberry Pi Zero 2 W. Because of the low ram of the rasppi it cannot run the full resolution of the sensor. I am trying to select a lower resolution but libcamera seems to be forcing a higher res. Is this a libcamera issue?

See device info in comments. For some reason the forum was giving a 403 error when I tried to add them here.

Let me know if more info would help.
Thanks

Device Info: