The cheesecake will not fully set until it sets in the refrigerator for at least an hour. If it seems a bit lose, or wobbly, this is why. It's totally normal. The texture will be rich and creamy once it sets. I always make the cheesecake the even before I plan to serve it to give it enough time to set properly in the refrigerator.
If there is a bit of liquid that is floating on the top of your cheesecake after you take it out of the pressure cooker you can use a paper towel to absorb the excess moisture or you can gently tilt the pan just enough to remove the moisture from the pan.
This cheesecake will keep in the refrigerator lightly covered for about 4 to 5 days. It's the perfect dessert to make ahead of time for a party if needed.