If you are intolerant to lactose, you can use some soy cream to replace the usual cow cream. It is the case in that recipe where you use the soy cream to make the sauce. It should taste just fine.
Put all the ingredients in the tank (except the cream)
Put the instant pot in pressure cooking mode 5min
At the end of cooking, empty the water if necessary
Put the soy cream
Switch the instant pot in mode browning a few seconds to warm up the cream
Servings 3