Regarding Property distribution

My father is a crpf employee and his brother is a LIC employee ( Gazetted). My father is the elder of both. His parents live in a village. Any concerns or problems regarding their health or Money, we look after them. We spent our own money for grandfather's operation. We reconstructed the house in the village and my Father's brother who have a better salary then my father and has only one child contributed less by about 40-50k. We send medicines to my Grandparents monthly. My mother took care of them in our house when they came for operation. And my father also used send his whole salary to my grandparents before his marriage to help her sisters marriage. And his younger brother didn't contribute anything towards it. Even though my parents help them so much my grandmother always harasses mentally my mother whenever my father is not there. And my father does not believe what my mother says. And now we are really fed up with the way they treat us. We want to split the 16 acres of land which they own and part our ways. But they are not willing to split it now. Can I file a case in any matter.