Place butter cubes in bottom of a cooking pan that fits inside your Instant Pot.
Place chicken in IP on top of the butter and top each piece of chicken with swiss cheese. If your cheese slices are hanging over the edges of the chicken, break off the excess and stack on top to prevent cheese from falling to bottom of pot and scorching.
Combine the cream of chicken soup with the milk and pour over everything.
Pour the stuffing mix evenly over the chicken.
Pour broth/water evenly over the stuffing.
Place trivet in bottom of your Instant Pot. Add 1 cup of water to the pot. Make a foil sling or use a silicone sling and use to lower the pot of chicken and stuffing onto the trivet.
Secure the lid and select the "poultry" setting for 15 minutes.
Natural release for 10 minutes.
Serve immediately with green beans or salad.
Weight Watchers Freestyle = 8 Points Per Serving if using fat-free swiss cheese. Lower, if you opt to use a lower point option for the butter and milk.