We catered to the older child (21 months apart) and let the baby get accustomed to sleeping in different places. The toddler needs the schedule so much more than the baby, but the baby will let you know what they need and when.
When I was on maternity leave, the routine was to go upstairs in our bed after lunch, turn a movie on, turn on the sleep timer and all take a nap together. Our older child was completely predictable. Our daughter was not, so I adjusted to what she needed at that time.
Good luck! The best advice is not to put too much pressure on yourself to have a schedule. Unless you have to be somewhere, be flexible with your day to help keep your sanity. There were a lot of days we never made it downstairs before 11am because 1 thing or another would happen.