Instant Pot Ham and Potato Soup

butter

carrots (peeled and sliced)

medium onion (chopped)

garlic (minced)

stalks celery (chopped)

cooked ham (cubed)

lbs Russet potatoes (peeled and cut in 3/4" cubes)

vegetable stock

organic heavy cream ( (or milk, or coconut cream))

salt and pepper,

thyme