How to do "Venom in the Blood" quest for the Hyrkanians?

This quest in Northern Grassnlands asks me to get poisoned by snakes and then come back so my poison can be extracted. This is the quest description:

‘Voice of Shaman’, a Hyrkanian acolyte in the service of a great seer, has challenged me to gather snake venom, but I must get bitten by the creatures first! And they must not be dry bites; I must be envenomated ten times and then return to Voice of Shaman to have the poison extracted from my bloodstream. However, the venom weakens rapidly, so I have to be quick about it and race back to her. She waits in the Hyrkanian camp in the northwest.

When I get poisoned by the Dune Cobras, a 30 second cooldown starts for the poison, but when I run back to the NPC, I can’t talk to her, because I am taking damage and the game says “this action is prohibited during combat”. I would appreciate any help.

you need to go to the correct snake and let its dot stack enough

You need to reach 10 stacks, then the debuff changes and you can go back and talk to the shaman.

Pull a couple snakes and white hit them to make the stack quicker. Even on a caster.

Be careful though, the 10x stack is nasty.