Generally ownership rights and interests in property of the debtor become property of the Bankruptcy Estate upon the filing of the bankruptcy.
From the information you provided it is unclear what you mean when you say your pending lawsuit is "worth almost 2.5 million USD". Is that the amount demanded in the complaint, a settlement offer you've been given by the defendant, or a judgment awarded to you? Are you saying the Trustee wants to settle the lawsuit for $31,250, and you want to know if you can prevent the settlement and continue with litigation?
The Bankruptcy Trustee has a duty to the pay your creditors with the proceeds from any money recovered from non-exempt property. Verify with your attorney that you properly exempted any amounts received as a result of your pending litigation.
Note: The statements or comments provided herein are for general information purposes only and do not constitute legal advice as to any particular individual or instance. Samson & Associates does not represent you until a written fee agreement has been signed by you and a representative of Samson & Associates, and all fees listed in the agreement have been paid.
This was an issue that should have been discussed and considered in great detail with your lawyer prior to filing your Chapter 7 case. Once you made the decision to file, it was essentially a decision to voluntarily hand over your assets to the Trustee for the creditors. If you filed with out a lawyer, it was an expensive mistake. Now that creditors have a source of money, the Court will act in the best interests of the creditors, not you. You won't likely get out from under Bankruptcy jurisdiction without paying creditors just on a promise to pay and an asset you claim is worth $2.5 million. A 13 might be an option if you pay everyone in full. "Everyone" now includes the Trustee and all the fees and expenses incurred and often the commissions he would be due. You can object to any settlement of your claim, but you have the burden of showing it is worth more AND why it should not be settled to pay creditors. Many people overstate the value of their lawsuits, often many times over.