I follow the rule of thumb to be on the safe side. I wait to eat 30 minutes after water intake and 30 minutes after eating. After each chew I wait 30 seconds before I take the next bite. So far so good.
That’s a normal feeling. Your going to do great! If your feeling hungry drink some water. Practice it because you will be drinking a lot of water straight out of surgery. Being nervous is normal. It’s going to be a big change.