For further info, if anyone is interested, Stephen Bax claimed a decade ago to partially decode the manuscript; here’s a video with his reasoning, as well as the paper he released. Sadly Bax passed away in 2017 (may he rest in peace), so the work was left incomplete.
If Brennan Lee Mulligan gave this to Siobhan Thompson under the guise of it being a d&d puzzle, she’d have it fully translated within the same session