At only a book a week, you'll easily hit > 200 in 4 years. No need to complete one in a day. Except for technical text books, most books can be "got through" in well under 4 hours. For most people, if they simply read instead of zoning out in front of the TV, (or being obsessed with social media!), that will yield >20 hours/week!

When I was student in french "classes preparatoires" (between 19 and 20yo), my binom was fond of books. He read between 2 and 3 books per day when most pupils had difficulties to cope with workload.