I had to dry some outdoor buds in a garage, and i knew the ambient humidity would be way too high.
So i remembered my organic chemistry skills, and how we used to use desiccants in a vacuum. The vacuum isn't necessary. So I just used a large trash can, and made an elevated screen on the bottom. And then I covered the screen in calcium chloride. You can buy it as an ice melt, driveway heat is one brand.
It pulls moisture out of the air, and the water precipitates under the screen. As long as you remove the moisture daily, it keep the ambient humidity low. You would be shocked with how much water the desiccant can remove from the air.
You would have to desiccate it and then immediately process it. I bet it will work.