This depends on the type of case, on the judge, and on whether there’re children involved.
There’s a 60-day waiting period for divorces in Michigan. There’s also a 6-month waiting period for divorces with children. In my experience, most judges will waive the 6-month waiting period (down to about 4 months) if the parents are in agreement on all issues.
The 60-day waiting period cannot be waived. The 60-day and 6 month waiting periods don’t apply in cases where children are born out of wedlock; different deadlines apply in these cases.