We just adapted to a routine over time.. it generally just went on his feeds and when he woke in the morning.. now he routinely wakes at 6am so the day goes from there. But no matter what time he's fed during the day (usually every 4 hours), i always feed him at 5.30pm and then bath him.. then feed again at 7.30pm and he's in bed by 8pm. I just inforced that gradually and he adapted to it easily enough.