I just feel hungry. But imagine if you were hungry on a train journey with no snack trolly. You’d just deal with it. Wouldn’t be the end of the world. So you have to get into your mind that you deciding not to eat is no different. You can’t eat at that time so hunger is just a sensation not something to be acted on.
Remember that hunger comes in waves and as you ride them out the hunger decreases. It will not just become more intense over time.Also, it‘s not real hunger, it‘s „brain-hunger“, not „stomach-hunger“. 😊