I have noticed that in Minecraft Java 1.20, the hunger runs out quickly in Survival mode and Hardcore mode, even on Easy difficulty. It takes a sprint for less than 10 seconds for almost two hunger bars to drain. I did not notice the hunger bars drain as fast as in 1.19. In previous versions of Minecraft Java, it would usually take 30 seconds when sprinting for the hunger bars to start draining after being full. I hope this gets fixed.