• Query regarding a property will

There is a property registered on my mother's name (who recently passed away). We are total 5 (3 daughters and 2 brothers.)  After my mother's death , my brother came up with a will (saying that the will was made while my mother was alive). The will says that the entire property should be transferred in the name of two brothers only. The will is written on 100Rs  stamp paper(handwritten will). The will was not made in presence of any advocate. There is nothing written in the will for us(3 sisters).

Can we do something to get our share in property? Kindly Help
Thanking you.