Getting baby on schedule/bedtime routine?

Ashley • 20 years old♍️ One daughter born on October 31st 🎃 In love ❤️
So my baby is going to be 3 weeks old on Saturday and I know she won't understand schedules right now but I'm slowly introducing things like turning off the light at a certain time and taking a bath every other day at the same time just because she really likes the bath and takes a long deep sleep after! 
What age did you start a schedule and bedtime routine? What did your schedule and bedtime routine consist of? How did you transition? 
Thanks :)