I use the plugin Sharing Cart. Then I set up a generic quiz without any questions, but with the settings that I want to use in a course and copy this generic quiz into the block Sharing Cart. Now I can use this generic quiz as often as I want not only in this course, but in all my courses, if I have the block installed. The timing needs to be adjusted, but that's it.
If you cannot install a plugin, the next best solution is to set up a generic quiz without any questions. Now duplicate this quiz as often as you need it and add the questions and timing if necessary.
With kind regards,