Belly Button Care!

Momma Fox • 1 of each 💝💙
Our little girl has a while before making an appearance, but my grandmother was telling me for the umbilical care, obviously don't submerge them into water while it's still on there, but after 3-4 days to start wiping it down with rubbing alcohol?
Is that a real thing people still do, or is it something from her time period, that shouldn't be done?