A good way to read a book that requires a little bit of stamina, like most of Dickens, is to read alongside books that are easy going, but with a strong narrative pull so you read a chapter of Dickens, and then a chapter of the other, and so forth.

After a while you are likely to find Dickens catches fire and grabs you, and you start racing through the easy going stuff to get back to him. Or putting it on side and getting on with Dickens to find out what happens next, and what's the big puzzle he's hinting about, and what is going to become of the characters.

It's worth trying.