Can I sell the entire property without asking my brother

My father willed his own earned property to my mother in 2005.( He died of cancer) . My mother has battled schizophrenia since 1993 & me & my wife has been taking care for over 21 yrs. In between my brother took her with him for 6 months & then sacked her from his house in 2010 citing that he will not take any care of her, she is a burden he no longer wants.Physical abuse happened .He said that he did not want even a single penny from her property. Since then he has not taken any care of her. After this me & my wife have continued to look after her. Our jobs got compromised due the extreme care my mother required. The legal heirs as per law are mother me & brother. My mother transferred her share to me & she wants to give my brother's portion to me as well as I have sacrificed my life in looking after her. My brother is senior officer in army & well off. I am 55 yrs & have no regular job since 2010. I was working as state head in ICICI prudential as my last job. My wife had to leave her govt job twice to look after my mother.( Before 2010). What are my options??? Will the court understand what pain me & my wife ev gone thru. My brother enjoyed all his life with zero care of my mother. All our relatives & neighbours , are fully aware of all these incidents. My mother does not want my brother to get a single inch from this property. What is the best option for me here. Do I stand any chance if my brother claims this tomorrow.?? Since 2010 my brother has been telling us ( my family & some of relatives) that I don't want anything from this property & it is my younger brother & his family who has been sacrificing their lives. But since 2024 he is making a U turn & has one eye on his portion & I can see his greed.He wants to buy a costly flat & he is a little short of money. His intentions are to sell his portion & fund his flat. He has no feelings for us, doesn't bother if we live or die. Plz guide me as to how we cud stop him from realising his demonic plans. Can I get justice from courts on these grounds?? Can we prevent him from his portion of property?? I have nothing else to sell incase I need any money in future..this is my only hope....Me & my wife cud ev done so well professionally but are at a very bad economic state & my brother knows this. He knows I won't be able to hire top lawyers & battle it out for a long time. He has betrayed my family all these years & now his greed is visible. May I get concrete pointers to fight my case.... kindly advise.... urgently before my monster brother does something stupid. My mother wants justice for me & my family. Will the Court of justice understand my side of the story.?? Should I even fight here & loose the little savings I have with me. My survival depends only if I have complete rights to sell this property. How do I stop him from taking away this portion from us..???