Taking cues/inspiration from the comics might not be a bad idea.
The sentiment that there's quite a bit of fat or outright indigestible material within the novels in the context of converting them to a live-action adaptation is not exactly a rare one. That said, I feel there is a solution beyond merely taking a scalpel to the original source material: the comics.
Not only are the comics already a primarily visual-based medium (which is easier to translate over to a storyboard), but they also emphasize the parts of the story that keep the story moving and expand on story elements that were only hinted at in the novels*.
(*Specifically, I was impressed with the fleshing out of Eddie and Henry's backstory in Marvel's take on The Drawing of the Three.)
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It is a tale told by an idiot, full of sound and fury, signifying nothing .