Yes, especially with instant pot because it's sealed, and little or no steam escapes the pot. Plus, you can't really check if the ribs are done or need more cooking time, unlike with a regular pot and oven where you can check them from time to time. Ideally, the meat should separate easily from the bone as you pierce it with a fork. And they're considered overcooked when the meat falls off the bone on its own and comes out a little mushy.