Ending Prediction

I can't help but feel like I'll be disappointed with the final episode, there's only 2 hours remaining of the whole series and I feel like there's a lot still to be explained. But with the way the final season has gone, I fully expect Eleven & Kali to somehow "uncouple" Henry & Vecna, and Henry will turn into a "good guy" to help beat the Mind Flayer, probably sacrificing himself along the way. Hope I'm wrong