Must be installedbefore you find out about Astarion's vampirism/finish tutorial for Astarion origin.
If Astarion already has Vampire Bite this mod will not work.
The changes are permanent per save file. Uninstalling will not revert it back to short rest.

Act 3
Spoiler:  Show Also works for your main character if ascended Astarion makes them his spawn.

My other mods :
More buffs on Tactician Difficulty
Dark Urge Custom Background
Ranger Hunter Multiattack EarlierShields for all races
Spells RevisedElixirs Revised