Will made by mother in my name but siblings are opposing

I have brother and two sisters(married).my mother has d form land and before she died she wrote a will(unregistered) to me only.i cultivated that land since 14years and recently it is acquisted by govt and giving some ex gratia to it.on that my brother and my sisters had gone to high court and filed writ on it and stay it there(pending).then how can i resolve this issue? Give me the best and appropriate advice to me.thanku sir