Course Navigation

Hi,

for our Moodle site 

Moodle version: 3.5.2

Theme: Boost

we have longer text oriented courses. That means roughly 60 pages. On the face of it you may see our courses as small books. Each page contains a specific chapter (say 3.5.1 eagles, 3.5.2 hawks etc. ) What we need is an overall vertical menu always shown while navigating though the course and which lets the user jump to any page within the course.  

For example we can take the old Moodle Navigation block. Unfortunately that does not allow a hierarical structure. Can we find a h5p - solution for that, i.e. for the followin  structure ?

1.

1.1

1.2

2.

2.1.1

2.2

Is it possible to integrate such a menu in the nav drawer of the boost theme ?

Would be grateful for hints, suggestions exmaples etc.?

Best,

Thor