Remove all parking spots instead of those for disabled people and your issue is resolved. No one will drive into the center unless they're disabled because they

Remove all parking spots instead of those for disabled people and your issue is resolved. No one will drive into the center unless they're disabled because they won't be able to find parking. So you can massively reduce car lanes, speed limits, etc. and thus effectively pedestrianizing the area. It is possible to have it both ways. Look at some of the city design in the Netherlands. The YouTube channel "https://youtube.com/c/NotJustBikes https://youtube.com/c/NotJustBikes" is a great start.