Firstly, get started in making your pumpkin pie filling. I always get this started first then I can be making the pie crust as it pressure cooks. You only need 500g of cubed pumpkin to make a medium sized pie.
Then roll your pumpkin pie dough on a clean worktop with some flour and then cover your cake pan. Cut around the edges. When the instant pot beeps, mix up your pumpkin pie filling and then pour over your pie crust.