The first few days, forget the notion of a 24 hour schedule - all you have is an event based schedule.
The baby wakes up. (0:00)
You cuddle them and prepare to feed (make a bottle/warm a bottle of premade/arrange your cushion nest for breastfeeding) (0:10)
Settle down for a feed. This could take anything from 20 minutes to an hour or more. (0:50)
You wind them. It takes a while. (1:05)
They are happy for a little while. You enjoy the cuddles. (1:25)
They poo/they don't poo, you change them anyway. (1:40)
They are happy for a little while. You might try to put them down to do something else. (2:00)
They want feeding again. Prep + feed (2:30)
They might now be asleep again. If you are allowed to put them down, they might sleep for anything between 1-2 hours. (4:30)
Repeat, all day, all night - the whole cycle takes anything between 3-5 hours and isn't especially predictable. You have to take care of all other needs - your own sleep, showering, getting food, driving to the supermarket, putting a wash on, cleaning the house, phoning your mum - in that 20 min period they are happy to be put down or during the 1-2 hour stretches they may sleep, or while someone else is holding the baby. And some cycles, they skip the part about being happy to be put down, so you lose those time chunks. Or you are just besotted with the baby and a bit mad with sleep deprivation, so you keep holding them anyway.
You can also do it this way around - this is what I tended to do in hospital, it's a bit more upsetting for them during the change part, because what they really want is milk, but it's slightly quicker overall.
Wake (0:00)
Change (0:15)
Prep to feed (if lucky someone else can do this part while you change, or vice versa) (0:25)
Feed (1:05)
Wind (1:20)
Feed/cuddle (1:30)
They are happy for a bit / they fall asleep again (possibly involving another feed/cuddle) (2:10)
They may now sleep for a couple of hours.
Of course, if you have another adult around, they can do some of the baby-holding shifts! And the in-between-feeds bits, if you're breastfeeding.
Some people will try to tell you it's very important to separate the feeding part from the sleeping part. Don't listen to them - it's madness! Feeding makes them fall asleep, it's supposed to. And their sleeping is your best opportunity to do anything non baby related.
But mainly, everything revolves around the baby's frequent need to feed and the very little time you have to snatch essentials like sleep and food.
Don't worry - it does get better! But it helps to go hour by hour in the first few days, rather than trying to envisage a routine or anything like that.