I'm so sorry you're going through this. I know it has to be very scary. Please know that warmest thoughts and prayers are with you and your little ones.
Sending prayers your way. I have a good friend who works as a parent advocate and counselor in a NICU (she has a 27 weeker and a 29 weeker herself), if you want to talk to her or email her any questions you can PM me your email and I will pass it on to her.