First, know that it can take a few weeks to adjust to a new eating pattern. But it’s important to try and eat all of your meals and snacks each day so you're getting adequate calories, protein, and nutrients. While filling from adequate protein and fiber, the meals are low in calories.
To ease this transition, eating smaller, more frequent meals every 2-3 hours can help. You could also eat a portion of the heated meal, store back in the refrigerator, then reheat when you are ready to eat again. The same goes for snacks - enjoy half and finish the rest a couple of hours later or even with a meal.