If you did not have health care coverage through healthcare.gov or one of the state marketplace exchanges for the months of November and December then leave all the columns for those two months blank (empty).

The program would not ask for an entry if the entire month is left blank in all columns unless there is something entered for that month in one of the columns.

Delete the Form 1095-A and re-enter if this continues.
Click on Tax Tools on the left side of the screen.  Click on Tools.  Click on Delete a form

To return to the Health Insurance section, click on Federal on the left side of the screen and then click on Health Insurance at the top of the screen.