To jump to other active returns in your TurboTax account for the same tax year:
Tax year 2020 and later:SelectMy Returns, on the top left side of your screen and then selectView all tax returns
If you are doing a spousal/together return please see the image below to find the other return/information. You can click on anyone of those to return and continue his return. You may notice the software will go through each of your returns in the interview as you answer the questions.