In the interest and dividend worksheets the amount of "Nominee Adjustment" is entered as a positive number (which may be counter-intuitive). You may have to us separate entry lines on the Sch. B W/S because the nominee adjustment gets spread across everything on that line; so split into a pre-DoD bucket and a Post-DoD bucket.
Then include an explanatory statement telling IRS what you have done about accomplishing the split. A spreadsheet will help, but there's no way it's not tedious.