What is your bedtime routine like for two or more kids? What do you do together or staggered? What are their ages and what's the timing?

I often do bedtime solo so divide and conquer won't work for us, plus I need to nurse the baby (3.5 months) and the toddler (2.5 years) only wants me anyway. I have been just getting the toddler down then playing with the baby before nursing her to sleep, but she's starting to have more trouble falling asleep and I think a bedtime routine will help, just trying to figure out how to fit it together!