https://torontoplebs.ca/.well-known/nostr.json returns data also for your account.

There should be no problem to update your profile to farfallica@torontoplebs.ca and you and others should see it as NIP-05 verified. Make sure when editing your profile to enter the new nip05 identifier in the field that is named for that purpose. I only see a profile change from your account where you posted the nostrplebs identifier. 🤷‍♂️