Reference design for M.2 module based USB/BLE keyboard?

I’d like to design a replacement open-source USB-C/BLE keyboard controller for my MS Sculpt Ergonomic keyboard using the MakerDiary M.2 module.

Are there any reference schematics available? I was hoping to find the schematics for the M60 keyboard (since it would be basically identical to that), but there doesn’t seem to be one.

I did find the schematics for the M.2 dock devkit, but I’m not skilled enough at circuit design to disentangle the parts of the design that are only there for the debugger and other peripherals…