I've been reading a minimum of one novel a week and from one to three tech/design/cooking/misc/etc books a month over the past 16 years. Sure there are exceptions, for example reading Game of Thrones took me at least two weeks per novel and the third book took me a full month.

Also, get a kindle. I don't read much technical books on it but it's a godsend for novels and not accumulating a bunch of paperbacks. Unless you don't enjoy reading as a pastime, in which case don't waste your time because you can actually burn out reading too much.