What to pack for a long NICU stay?

We anticipate our baby will stay at least 1.5-2 months in the NICU once they’re born. We are traveling out of state to deliver them at a hospital capable of handling their condition and staying there with them until they’re released. Looking for advice/tips on packing for such a long stay because I’m not sure what the hospital will allow. Should I be bringing their newborn clothes? Pumping parts/bottles/breastmilk storage bags? Will they be able to use any of their swaddles? Mittens and hats? I’m assuming the hospital will supply all their diapers, wipes, and blankets? Thank you.