You may e-file your taxes at any time.

Your Taxes owed are not Due until April 18th this year.

To e-file your Federal

Log in to your TurboTax Online account

From the Overview page Select

My TurboTax

My Tax Timeline

In the Some things you can do area  Select

Add a state

This will let you back in to your return

Select File

Step 3

Select I want to e-file

Proceed with the interview to e-file

I hope this helps