Re Sleep. I just follow bubs cues in the early days, feed on demand and let him sleep when he wants. I do keep the lights dim and very quiet when he wakes overnight for feeds so he learns day-night. During the day he mostly sleeps in the lounge in his bassinet, its bright and noisy with a toddler playing the recorder next to his head But he sleeps with noise!
Honestly with my two I found that I couldnt have had a routine in the beginning. a routine started happening naturally around 8weeks for my daughter.
In hospital you will find that everything is upside down with the ob and pead checks in the morning, baby and your monitoring day and night (thats annoying), middies coming in to help you BF if you need help & visitors. Newbies tend to sleep a majority of time for the first few days (bar night 2 or 3 when they fed nonstop!!!). They just gave me advice on the maximum amount of time to leave it between BF. For I it was no more than 4hrly as he was just on 3kg born. Otherwise the middies just said fed as bub wants and lots of cuddles and skin-skin. It will be your decision how you want to do it!