I give one piece of advice, heavily caveated, that running a vacuum cleaner helped calm my newborns when we brought them home from the hospital (advice from nurses line when our oldest was inconsolable at 4 days old). I then follow up that everyone parent is going to have advice that worked for them and their baby, and it can be tiring to hear but typically comes from a place of love. The parent-to-be will figure out what works for them. Reach out for help, they aren't alone, and so on.