That's one every five weeks. Middlemarch is roughly 900 pages. Assuming one reads five evenings a week, that's 36 pages per sitting. Each page is roughly 300 words. An average reading speed is about 250 words per minute; let's knock that down to 200 for denser works like those discussed. That's 54 minutes of reading per day.

Hardly a huge time commitment, especially as a way to decompress from the day.