Cross-listing is the preferred, suggested way to minimize the number of similar courses on your dashboard and reduce your teaching workload. You can follow the instructions below to cross-list your other classes together:

Cross Listing Canvas Sections – Using a Single Course for All Sections

You should cross-list any courses that have substantially similar assignments. For example, you may cross-list three sections of Intermediate Art together, or if you teach nothing but 7th-grade English, you can cross-list all these sections into a single course to save you time.

Once cross-listed, all students in a course will see the same content and receive the same updates. You can even give different due dates to sections separately if you need to or want to account for block scheduling. You can review the link below for more information on this:

How do I Assign an Assignment to a Course Section?