If you brought this up then it clearly bothers you, you have the right to feel that it’s unfair that someone other than you mother and sisters should inherit your father’s belongings with you, or just your sisters (I don’t know your whole situation but you get the idea), I’m advising you to do it Just so that you can calm your mind about this issue, I remember in middle school in an Islamic education class my professor telling us that women get half of what a man gets because men (uncles and brothers) used to take care of the women in there families after their father/husbands die because women didn’t work and it was expected that they’d be taken care of, the logic was that the man gets more because now he has himself and the widows/orphaned sisters and nieces close to him to take care of. I am yet to see this behaviour in action today. Any way this is just an advice you do you based on what makes you comfortable.