Wrong case filed

Sir, my brother is a pychiatric patient since 9 years. He completed his b.tech(cse) first class in 2010, my father was a mro(retd in 2005) and expired in 2009 after my father expired we went into financial issues, my brother waa disturbed and could not secure a core job and did odd jobs, eventually went into depression and suffering from schrezoprenia, and not willing to take medicines also.However, recently my neighbourhood belonged to Goud caste, a wife & husband wantedly pushed open the gates into our house(on 12th May 2022) raised chappal on my brother beat my mom with chappal, saying that my brother teased her minor(17yrs) daughter and they made my brother fall on their feet for apology for not doing anything wrong in front of local police constable only whom they called, he is a psychiatric patient if he looks at someone only they file a wrong case or what, his looks might frightened their daughter and she cried, they also knew that my brother is a psychiatric patient, now to our surprise the very next day they booked an fir under posco act and other sections writing in fir that my brother held her daughter's hand tried to rape her and my brother hit their family members all wrong allegations, Police without any enquiry they took my brother into custody with their political pressure. When I met the daughter's father in PS, to my shock he was telling to me that u people should go away from the colony to faraway place otherwise they will not withdraw the case, the thing is we are owning a big house(300sqyrd) than them(80syrd) and we belong to lower community (sc mala) we are staying since 18years they only came 7 years back, now with the help of colony president they are insisting us to sell our house and move faraway, my mother is 65years old, she is in shock, we had sleeples nights due to my innocent brother who is also a diabetic was kept in central prison for 46days, by moving pillar to post with our lawyer paid him 1.3lac rupees with much difficulty for getting a bail, he got bail now after 46 days, after court appearance on 07th July 2022 they postponed the case to October 15th 2022 We are going through a trauma, kindly suggest us what to do next, i will be grateful to you sir...