Turn the heat down to a simmer and let the pork boil until you can shred it with a fork or cut into chunks and then shred. This takes about an hour. Make sure it doesn’t boil dry. If it starts to go dry, just add water, 1 cup at a time until it’s shreddable.
***If you so desire, you could probably do this part in an InstantPot. You’ll have to do the research about how long to cook it though. 😉