you can use one as preferred and make the other redirects to preferred one, I do this with nginx:

server{

        listen 80;

        server_name avanzaconsulting.co;

        # Strict Transport Security

      add_header Strict-Transport-Security max-age=15768000;

         # log

        access_log /var/log/nginx/odoo.avancons.access.log;

        error_log /var/log/nginx/odoo.avancons.error.log;



     # Redirect 301 to HTTPS

     return 301 http://www.$host$request_uri;

}

But if you have apache or other systems, the settings are similar.

Maybe if you provide more information, we can help you with precision.