Have you recently thought about who does what jobs/chores/tasks around your home?
No matter how “fair” and sane the “division of labour” was in the past, odds are changes in your lives make the past plan less than perfect now. Has either or you gained or lost “free time” recently? Have changes at work made it more or less difficult for either of you to do certain things? Does some new health issue make something more difficult for one of you to do?
Don’t forget the kids as you divide up tasks, but also don’t treat them as slave labour. Be fair to them, both in what you expect of them as a group, and in how you divide things up among them.