Are the daughters eligible for parents property even after their death

Hello, this is regarding my grandmother's property (maternal). My Nani aged 97 had a house whose today cost is around 4.5crores. She earlier made a will in which said that property will be divided among her 4 sons and 2 daughters(one being my mother). According to it, in municipality 6 names have been registered. My mother passed away on 23rd March 2018 and after one month my Nani too died on 27th April 2018. Now my 4 uncles came to me that they are planning to sell the house and there's no share of my mother. Because they have discovered a new registered will of my Nani ( which is dated 18.3.2018, 1 month prior to her death) according to which the property shall be divided among her 4 sons and not daughters. Now my uncles are forcing me to give NOC to the municipality so that they can remove my name. One of my uncle is even planning to bribe the municipality official to delete our name from the official records. They have even given an application for the same. But I have not received any notice from the municipality till now. What should I do? Before my mom died suddenly, everyone agreed on 6 divisions, but after my mom died, everything has changed. Now I along with my cousin (mausi's daughter) are planning to file a case in court against my uncles. Kindly guide me what should I do and what are my chances of winning?