I enjoy reading a good book but a large book (think Moby Dick) won't take me much more than a couple weeks at most reading regularly every day. I have no idea h

I enjoy reading a good book but a large book (think Moby Dick) won't take me much more than a couple weeks at most reading regularly every day. I have no idea how to read a book for that long... that seems to indicate to me that perhaps you just read slower?