I did it differently: told all my contacts I‘d only be available at nostr:nprofile1qqsfhcskzx35zsnwj9rz2lz5z70z95tchd75zphzglwl8eg8k7v956cpz4mhxue69uhhyetvv9ujumt0wd68ytnsw43q80udzz and deleted WhatsApp.
Created several family / friends / colleagues groups and sent them invites.
Posted interesting stuff on Signal and didn’t (couldn’t) reply anywhere else (didn’t even use SMS).
I found you have to be brutal in cutting off and people move over quite quickly if you provide value. (Don’t FOMO, don’t flinch.)
It’s totally normal now for all generations to only communicate on Signal.
Next step: get them all on Nostr/SimpleX/Bitchat… 💥