Roughly chop your peaches and mash them with a potato masher.
Measure out 6 cups peaches and put them in the bowl of your instant pot.
Pour the sugar over the peaches and let sit 2-3 minutes, until the juices have been released.
Mix in the pectin and lemon juice.
Close the lid on your instant pot and set to sealing.
Set to Manual - high pressure for 1 minute.
Natural Pressure Release.
Spoon into pint sized canning jars, leaving 1 inch head space (1 inch of space between the jam and the lid).
Let cool and then refrigerate or freeze.