What does your daily routine look like?

I have two toddlers 21m and 3.5y. I'm also 6 months pregnant. I'll be honest up until this point I've been pretty relaxed about our schedule and routine, but bedtime has been super chaotic lately and it has me nervous for adding a new baby to the mix. I'd like to really crack down on a better routine before baby gets here to hopefully make things easy on myself. My husband is able to help somewhat but when he goes back to work I'll be doing a lot of it by myself (including bedtime) due to his work schedule.

Anyone have any tips or wanna share a general idea of their daily routine? My oldest does not take a nap at all, and my youngest naps once usually for about an hour or so.