Have more protein, veggies, healthy fats like avocado, and less carb (but not no carb, carb is still impt when you’re pregnant), have less sugary stuff (when your blood sugar spikes and then crashes that’s when you feel hungry). Eat small balanced meals multiple times a day. Remember, even if you’re overweight before pregnancy, you’re still supposed to gain weight during pregnancy. Here is a calculator with recommended weight gain amounts (you can key in your height and pre-pregnancy weight and current weight for detailed recommendations) https://www.calculator.net/pregnancy-weight-gain-calculator.html
suggest to eat more of smaller portion meals with healthier filling food e.g. oats (instead of noodles/rice) and fibre and water intake.. Avocado is good but higher in calories and fat so do eat in moderation if need to watch weight.