Did your team give you portion size recommendations and guidance around number of meals & snacks if any a day? If not ask for some as you will find them helpful. The next advice is to stick to those recommendations.
Are you eating slowly? It takes at least 20 minutes for the message to get through that you’ve had enough. If you eat too quickly you will get over full & be uncomfortable & you’ll really know it when your restriction kicks in! Take small bites, use small cutlery (teaspoons, cocktail forks, baby cutlery, etc.), put the cutlery down between bites, sit back from the table & wait a couple of minutes. Then ask yourself do you need the next bite or just want it. If you just want it put the cutlery down again. Personally I aimed not to feel full but to feel like I had enough & didn’t need more.
As @SpartanMaker said it takes time to learn the difference between your real hunger and your full cues. Before eating take a moment to think about why you’re eating? Are you bored, emotional (sad, angry, frustrated, stressed, anxious, etc.)? Are you eating out of habit (like because you’re watching tv, a movie, it’s an old snack time,…)?
Sneezing, hiccups, runny nose can be full cues for many. If you’re craving a specific food, flavour or texture that’s not real hunger. I get restless with real hunger as if something is wrong. It usually takes time to realise I’m actually hungry and then I can logically understand why I would really be hungry - missed a meal, didn’t eat much at a previous meal, etc.
It takes time to understand all this, what your signals are, and what strategies to manage it all works for you. Give yourself grace while you’re working it out.