Selling of property after father's death

I lost my father in 2019 . My age in 2019 was 11 years +. Being a minor i cannot sell my property. The property belonged to my grandmother, who passed away in 2018. Hence the property was inherited by her 3 siblings. Eldest son ( my father ), then my aunt and finally my uncle. Before my father could put the individual names, on legal property papers, and divide the property, he passed away in 2019. Now my aunt and uncle says that the property shall be divided in 3 parts, equally, between aunt , uncle and me. They keep saying that my mom cannot inherit the part which originally belonged to my father. Now both my aunt and uncle wants to sell the property, but the buyer has a question that what if the kid, ( me) after becoming adult files a legal case for the property. Then what happens ? Can I really file a case after the property is sold. My mother is ready to sell the property, with my consent to sell our part . Will the buyer face any problem in future? Is there any legal paperwork to be done for my consent. ? Pls guide.