umbilical cord fell off.. now what ?

my sons cord fell off a few hours ago and i have some questions on how to take care of his bellybutton, he doesn’t have an appointment with his doctor until tuesday and i don’t have a number to call and ask questions until then so i was hoping y’all could help me out 😅😅

do i still have to fold his diaper down ?

can he get wet ? (ie baths)

is there anything specific i’m supposed to do to make sure it heals correctly?

it looks fairly healed, a little crusty and tender but nothing leaking or oozing