Sunday in our households is not a rest day. It's a full shift: service, visits, the big pot of stew, the phone call to every relative in another time zone.
Steal back one hour. Not a whole day, just one. Bath, face mask, playlist, notebook. Tell people you're 'busy' — you are, with yourself.
Write three things for the week ahead and one thing you're letting go of. Then sleep like you've got nowhere to be on Monday (you do, but pretend).