Bring a large water bottle to the birth. Go to one of those newborn classes and learn how to change a diaper and swaddle at the minimum. (If applicable) split the night into two shifts to maximize uninterrupted sleep. Listen to your gut. You're ultimately responsible for your baby. If something doesn't feel right, then speak up and set boundaries with the other people in your life. Do it from the start, preferably. B…
What we tried: I would pump some milk before heading to bed @ ~10am, and he would stay with the baby and give her the expressed milk. At around 1-2am, we'd switch.
Why it didn't work: * I am really bad at getting to sleep, especially if I know I have to get to sleep. So I wouldn't get to bed til 11/12, and then I'd have to wake up soon after. (Relatedly, I'm incapable of napping). * The baby wasn't particularly happy with the bottle feeding and my partner was pretty stressed out by trying to keep her from crying and interrupting my sleep.
What we do now: I co-sleep with the baby in a floor mattress all night, so it's easier for me to drift in and out of sleep. My partner sleeps in a bed in a different room so that he can maximize his sleep hours and be functional during the day to help out with chores and cooking. So yeah, it's pretty much all me at night, but that's the reality of breastfeeding. My partner would breastfeed if he could, but alas, biology. (And yes, co-sleeping isn't approved by AAP, so you'll need to decide for yourself if you think its safe).
Anyway, everything depends on each mother/baby/father. Experiment, see what works/doesn't work for you!