You can always reset your wallet that would erase your original seed words, but make sure you have backup in safe place, if you want to recover it later.
Than you can create new multisig (or singlesig wallet) and use it normally however you want, and you can do reset for this at any time.
I don't own Coldcard wallet so I don't know all details about this, but I know they are using sd cards for encrypted backups.
Follow instructions on their website advanced ''danger zone'', to reset and wipe your seed words:
https://coldcard.com/docs/advanced