I thought the book of Enoch matches with the Dead Sea Scrolls and that the scrolls are generally dated to sometime before Christ?
I think Enoch doesn’t fit in this category.
There’s Enoch of the Dead Sea Scrolls and there’s the Slavonic Enoch which is widely believed to be a medieval forgery. I Enoch, the Ethiopic Enoch, is authentic. II Enoch, the Slavonic, apparently is not.