The first time I made this I tried doing a quick release of pressure after the cooking time was up and I ended up with a literal volcano of cream coming from the spout of my Instant Pot! Ha! So, that's why I recommend you wait for a natural release. Cream has a tendency to boil up when being cooked and comes right up to the top of the pot, making for an easy escape when you release the valve. You may be able to get away with letting it cool for 5 minutes and then try a quick release, but do so knowing you might get a cream bath. ;)