Hot take. Your best shot at turning this into a usable food grade cutting board is to mill it into 1x chunks now while it is still wet. Then stack those chunks for drying. They’ll get a little warped and shrink during drying but checking should be greatly reduced. Then once dry glue em up into rows and run them through a planer. Then glue those planed rows together and plane that. Square of your edges. Hit it with the router and sander. Then soak in mineral oil. You should now have a decent end grain cutting board.

This was a simplified take, but that’s the jist of it.

Should be: “your password cannot be one of your last 24 passwords”