How to split 1099-B, DIV, OID, INT for income before divorce

My divorce was final in April 2021 and our shared investment account was subsequently split in half.   But I received 1099-B, DIV, OID, and INT from Schwab for the months before the shared account was split up and closed.    Using TurboTax, how do I allocate half of that income to my ex-spouse and reflect that in my own tax return to lower my tax liability accordingly?