Query regarding gb polyp. I avoid?

So i got a tiny polyp of size 2.9mm in my ultrasound yesterday, wanted to know is this common in my age? And what should I do to reduce this? And i take omega 3 fatty acid capsules, will this worsen or aggravate the polyp or is it good? And please help me why is this happening with me! I am scared! My gastro doctor said to monitor it next year with another scan but i am worried. Btw I exercise regularly, i try to avoid fat as much as possible. But m really scared. Do these polyps regress or go away? In my family no 1 has had this int heir young age. My dad has underwent gb removal 2 years back. (When he was 62yo, due to gallstones ). He never had any issues during his early ages.. why is this happening to me. I am afraid of cancer. Attaching the report... please help me to deal with this, what all should I avoid? I am getting into depression due to this. Please guide me.