The fact that Dever is a busy actress with various obligations could make picking up where the story last left off problematic if the show can’t get her back for the continuation of that two-part episode.
Caitlyn Dever’s Eve did return for Last Man Standing’s final episode of Season 8, which was not originally planned to be the season finale.
The global health crisis made it so that Season 8 ended at an awkward position in the story, and Eve was still hanging out with the family while Kristin was in labor.