by Willijan » Mon May 20, 2019 7:00 pm
I converted your kg and cm to lbs and feet, approximately, and got 123 lbs and 5'6", which gives a BMI of about 19.9. This is well within the acceptable range, so it seems that your main health goal might not be losing weight.
I would experiment with different amounts of oatmeal and different toppings and see which ones tasted good and kept me full for the amount of time I needed before my next meal or snack.
I am 5' 4 1/4", with a weight of 109--110. I used to eat 1 cup of raw thick-cut oatmeal for breakfast, cooked with 8 dates and topped with a whole apple. At some point my weight was going up and I was unsure why. Eventually I decided to cut back to 3/4 cup of oatmeal, 6 dates, and 1/2 or 3/4 of an apple. I found that this kept me satisfied, and my weight went back down several pounds to 109-110.
Recently I have tried something that sounded terrible to me, but turns out is quite good: 1 cup of raw oatmeal, 12 oz pkg. of frozen broccoli, or a largish amount of chopped spinach, cooked with garlic and sprinkled with soy sauce. This breakfast tends to keep me full longer, and the calories are lower than the one with dates. But I still eat whichever one I want that day.
It isn't critical how much oatmeal you choose to eat. The important thing is to eat compliant whole foods, and make sure you are full to satisfaction. If you find you are gaining or losing too much weight, change the amount you eat or change the calorie density of your meals.