Currently the ‘pages read’ challenge only updates when a book is marked as finished (and soon when marked as DNF)

If the book being read is particularly long this means that for several days the challenge will tell you you’re behind, but that may not be the case if the progress through the book is taken into account.

Current behaviour:
50% of the way through a 1000 page book = 0 pages in reading challenge

Desired behaviour:
50% of the way through a 1000 page book = 500 pages in reading challenge