I used to love King, but the one-two punch of Stephen King’s The Simpsons Movie (Under the Dome) and Doctor Sleep killed my interest in his (new) books.
I think Under the Dome was mostly just kinda mid, Doctor Sleep was just actively bad. I might have enjoyed it more if it wasn’t supposed to be a sequel to The Shining, but there we are.
Are you trying to read all the story bits at the same time? I found it easier to just focus on either the main text or the footnotes, and then read the other part afterwards :)