Get a long book, a timeless classic, and read one chapter a night.
I grew up reading all the time. About 20 years ago, I found myself reading less and less. I decided to read "The Count of Monte Cristo" again. I decided I would read one chapter a night, before going to bed, regardless of how late it was, how busy, etc, By the time I finished, reading before going to bed was a habit. I read 30-60 minutes every night before going to bed. (Read plenty of other times, too; but, no matter how the day has been, I read ever night.)