Draconic for dummies chapter VI unneeded or granted for players of lvl < 80

As part of the Shifting Sand quest chain for AQ gates opening, players are required to gather all 8 chapters of the "Draconic for dummies'' to complete the quest ''The Only Prescription''.

Chapter VI is a loot drop from Onyxia. At 3.3.5, Onyxia being a lvl 80 raid makes it impossible for lvl 79- to do that quest that is originally for lvl 60.

It would be great to be able to finish the quest without requiring that specific chapter and/or being able to get it for free or from another way :)

That would surely make all 60 / 70 twinks & lore lovers very happy.

Thank you for your consideration

---EDIT---
I meant for players of lvl < 80 in the title, sorry for the typo

We don't really do that sort of custom change, especially for the sake of something that seems way niche.
You should simply consider this another one of the things anyone is automatically opting out of when deciding to play a "twink."