It would be nice, but unfortunately we can't merge information between accounts due to security protocols.
If you each have an account, have a discussion to see which of you have more information to individually pull up automatically from last year.
Filing on that account and adding in the other spouse with less information manually the first time will be easier, and next year your information will self populate as well.
If this helped you, please up-vote this answer so I know you were taken care of 100%. If we need to work together further to get it resolved, please comment...we'll get it taken care of together.
I'm here to help.