how to proceed further to get my share property from my Uncle

Out of all the property one of my share property which was on grandma’s name was given to me when my grandpa was alive and I was doing agriculture and maintaining it for more than 6 or 7 years. That property which I was doing agriculture and another property which was on grandmother’s name is the issue now. Will explain how, Property 1:- Grandmother wrote it on my last uncle’s name(my father's brother). Which was only on her name and no one was taking benefits on it. Property 2:- Which was given to me by my grandfather for which my grandmother wrote a will for it on my Last Uncle’s name. As it was on her name too. Now I don’t know how to proceed further to get my share property from my Uncle. Everyone saying that I can only forget about it and I can do nothing as she wrote a will for my uncle. Please help me on this as quick possible to get my share property. Moreover he was the one who got all the documents of our property, WILL and all the details.