My brother in law is cheating on me

We have a business of cng gas fitting in which my had put his whole n soul in it suddenly on 31/8/2022 my husband passed away due to cardiac arrest n before his death he had written that th business is 50% share of mine n I have 3 children n no bread earner in my house after my husbands passing my brother in law couldn't handle th business so he put them in rent frm which I was getting monthly rent of 1 lakhs 37k every month but since dec 2023 he cutting all my rent n giving me 40 k saying that he's facing loss in business n over draft with bank is overdue so cutting all my money saying u should also bear th loss n OD I told hw my rent is cut for th OD as itz not concernd with business nafter my husband death he's was only using th OD n business from which he was not giving me a penny nw on December he gave me balance sheet to sign for renewal of OD which I didn't so for that reason he's cutting my rent So what should I do for th rent that he's cutting I asked him even my kids asked him he says u have bear th loss n pay th interest of OD can I get help or from where should I go for taking some step for my ▶️ right