Glad that you are getting closer. You can either just backup and restore (https://docs.moodle.org/30/en/Course_restore) the course to a new course or you can do a course upload with csv (https://docs.moodle.org/30/en/Upload_courses)and use your original course as a template (this is useful if you have a bunch of courses to do at once).
Courses and course formats
Editing course availability for each student
Dán digaštallan lea giddejuvvon, it don sáhte šat vástidit dasa.