No, you should not create a new account. You can simply sign in using the existing username and password that you already have. This will allow you to keep all years in one account and will allow you pull over data from the prior year.
If you can't remember your username or password, we can help with that.

Forgot Username?
Forgot Password?

If you have not filed with us for your 2019 or 2018 tax return, please create a new account.