I have come back to add a bit about routine, or rather, lack of routine.
When I was pregnant, I thought if be quite routine focused. I bought the Gina book for twins and I thought about how my days would be. I work in an organised, pressured place, and I thought that following a routine would be easiest.
Once my babies were here, routine never featured! I was astounded by the physical 'need' I had to respond to my babies and how easily I could see their every cue. I think we're basically mammals, and not that different to any other mammal species. So I listened to them and responded, and they set the pattern of the day.
For the first two months, it really was a relentless round of feeding, changing, settling, pick up the other baby, feeding changing, settling, pick up the other baby ..... but after about 10 weeks, patterns were apparent and I could anticipate things a bit more. By 4 months I could form a fairly reliable plan for the day and know when they would nee feeding (and feeding was 10 mins each rather than an hour each by then!).
People often say that I must be very organised. I don't think I am - I am just very anticipatory! Before we leave the house, I've thought through lots of things that might happen and slung anything I'll need to cope in my bag/buggy. Thn whatever happens I have everything I need. I then look like I knew it would happen, hence the orgainsed image, when actually I am just prepared for any of the 20 things that might happen! This is a great skill to master with two babies, because it isn't as easy to improvise with two babies - if you're in a cafe, you can't put the baby on your hip and go to ask for hot water. You just can't carry two babies and go for the water, so you'd have to load them in the buggy, or wait for someone to pass the table, or leave your babies and go by yourself. So it's easier to just have everything you need with you :) It's a skill that comes quickly!
I hope everything goes well for you, that you make it to your scheduled CS date and are able to go either flow and enjoy the early days with your babies :)