Psycho666Soldier

Dr. Stone is one of those manga where the first few chapters don't well represent what it becomes a few chapters later. It takes on new life after the short first arc, which I'm hoping the anime does a bit of remapping to better tell the beginning.

Not sure if you mean back and forth as far as quality or focus of the story. Because sometimes they get so derailed in making other scientific advancements that they almost gloss over the original task/reason. I think it helps that I read most of it in a bug chunk until the last 15 or so chapters.