I know my limit

Galaxy • Hello. I am a human.
When we have rice with dinner, I always put sour cream on my rice, but lately my parents seem to think I don't know my limits. Today, I had put two small scoops of sour cream on my rice (We hadleftover rice and leftover rice is really dry) and was going to get one more, but then my dad said that was enough. And because of that, my rice tasted dry and gross. Nobdody says a thing when my sister puts half a bag of shredded cheese or eats 4 different snacks within 6 hours. And earlier, I had gone downstairs for a few seconds and my mom told me I had had a snack just an hour before, but I wasn't even looking for something to eat. I am a teenager and I know how to care for myself and get my own food, I don't need someone to conatantly monitor my eating choices. I really just want to cry.