Gifting agricultural property

My family in as joint family with grandfather as head had 33 acres of land My grandfather have 4 children , 2 Sons - 2 Daughters After panchayat partition 33 acres divided into {11 acres grandfather , 11 acres my father , 11 acres my uncle } Now , there is oral exchange of land between my father' s 11 acres with my grandfather' s 11 acres After all this , my mother had filed false dowry case on my father and this are not good in our family Unfortunately , my father is no more in this world Now as things are not well in my family I don't live with my mother , my mother don't gives me any maintenance from pension and PF of 70 - 80 lakh of 17 - 18 years of father ' s service in MHA Before all this I lived in Delhi studying Now I am stuck with only agricultural property Now to the point , I have a younger brother 1.5 younger than me , I have 2.5 acres of agricultural property on road As I have told this earlier this 2.5 acres are according to partition is in part of my grandfather but due to oral exchange of 11 acres of agricultural property between my father and grandfather , I do agriculture on this property As I have no hope of support from my mother or anyone I want to have this 2.5 acres of land on road if I am atleast 33% owner of my father's 11acres agricultural property I am 18 years old And busy in agriculture instead of studying And mother don't clarify my how many lakhs she got as PF retirement so , After all hardship I can start a business atleast because agriculture is simply not sustainable and profitable for my long term life I too understand insecurity of my mother conditions What should I do for my future in case of this 2.5 acres of agricultural property on road because I may not get any Support from my mother (i.e any part from my father Central service PF in lakhs for some business for long term life) Agricultural property is in Bihar