Father Mismanaging Money, Selling Gold, and Refusing Transparency – Need Guidance

Note: I first drafted the post and asked AI to format it properly for better reading.

Personal Background

Age & Marital Status: 31-year-old male, married.
Living Arrangement:
- Living separately from parents, renting a place with my spouse.
- Parents live in my father’s house.

Financial Demands from Father:
- Before marriage, I provided ₹10,000 per month to my father.
- Additionally, I paid for groceries, cooking gas, and other household expenses.
- After marriage, it became financially impossible to continue this level of support.
Lack of Financial Transparency:
- My father refuses to share his bank account details, statements, or investment records.
- He constantly claims to have no money for survival.

Gold Being Sold:
- My father is selling my mother’s gold, piece by piece, to cover expenses.
Suspicious Spending:
- I strongly believe my father is spending money on the “Star Maker” app (buying virtual gifts and coins).
- I have transaction screenshots that can serve as proof, but my father doesn’t let me access his mobile.
- He owns four phones that are constantly on charge.
Shady Property Investment:
- My father spent ₹10 lakh on a dubious property deal using my money.
- Despite providing 12 years of my bank statements to show he took my money, he denies it and refuses to show his bank records for verification.

Potential Sale of the House:
- After exhausting the gold, I worry my father will sell the house and squander that money as well.
- If this happens, my parents will be left with no financial security.

Mother’s Condition:
- My mother has schizophrenia and struggles with depression.
- She always sides with my father, believing his claims and denying he is mismanaging money.
Impact on Mother’s Mental Health:
- My father’s constant complaints about money worsen her depression and schizophrenia.

What legal option I have to protect the assets and money?