Yes, instead of making your corrections in the review section, you can go back to the wages and income section and make your changes.
In TurboTax Online here are the steps:
- Navigate to Federal > Wages & Income >IRA, 401(k), Pension Plan Withdrawals (1099-R) > Add/Edit
- Choose the icon to the right of your 1099-R already entered
- Continue through the next page that will have 1099-R highlighted
- Now, you can make your changes.