Reuse OPNsense ACME DNS wildcard certs for Vaultwarden

I have a letsencrtpt DNS-01 wildcard ACME cert set up for my opnsense home lab network and want to reuse the generated certs for a vaultwarden instance if possible. I have a fqdn setup installed so vaultwarden will be
Is this possible, and if so can anyone point me in the right direction as to how to achieve this.