I have all 3 1099-R. I didn't mean to use form 4852.

You can delete it.

Here's the general procedure for deleting unwanted forms, schedules, and worksheets in TurboTax Online:

1. Open your return in TurboTax. ...
2. In the upper right corner, click My Account > Tools.
3. In the pop-up window, select Delete a form.
4. Click Delete next to the form/schedule/worksheet