Expecting preemie

My due date was originally 12/18, I just got diagnosed with preeclampsia 3 days ago and they informed me she’ll be here before I even make it to 34 weeks, any tips on preparing for her to come so soon? It’s so nerve wrecking not knowing when she’ll be here and I already won’t have a whole month to prepare for her to get here, they told me to keep myself as least stressed as possible but I can only think about how stressful everything is especially not knowing when she’s going to be delivered😭 I’m also so scared that I’m gonna have to leave her In the NICU i know they’ll take care of her it just sucks knowing I won’t be able to take her home right away :(