Assuming you do not have a metabolic disorder of some sort (which may be the case, but you'd need a doctor, not the internet, to diagnose it):
Try switching to fat+protein (and zero carbs), and see if it keeps you satiated longer. Many people find that carbs make them hungry again quickly, even if eaten with fat or protein.
Try switching to fat+protein (and zero carbs), and see if it keeps you satiated longer. Many people find that carbs make them hungry again quickly, even if eaten with fat or protein.