Just in case it might work for you, and only because you asked for suggestions (otherwise I know each family's bedtime is what works for them), we have found it to work if I read out loud for a certain amount of time (a chapter or three picture books, or whatever), but not so long that the kids are half asleep, and then we say goodnight to each other and each child is then in his or her own room in bed reading to themselves for a half hour or until they are tired. They still get the reading and bedtime routine from me, but then have the time to read on their own.
Of course, thinking back, I didn't really like to read for fun until my senior year in high school in AP English, and I turned out okay, so I wouldn't worry too much
