If you don’t yet have sweatpants with pockets for your postpartum period, get thee to your local store (or, you know, Amazon. But support local!!) A robe with pockets, hoodies with pockets– you’re gonna need a lot of pockets. I have one pair of comfy sweats sans pockets and one with two; I don’t need to tell you which I prefer wearing.
Your hands are going to be full of a baby that 1) you’re terrified of dropping and/or 2) doesn’t have control of their motor functions and is prone to jerking nearly onto the floor. You will need pockets for bottles, pacifiers, your phone, snacks, tissues… all of those supplementary baby things that shouldn’t take priority in your hands over your actual child.
You WILL start to amaze yourself with all the things you can carry at once, and once you get some confidence you might even start stacking things on baby… within reason, of course. An empty water bottle balancing on baby’s chest while you’re carefully carrying them down the stairs isn’t going to hurt anybody. Reminder to not carry hot things and baby at the same time: always set baby down and then go get your coffee cup.