I too, am very sorry that your son had to be delivered so early. This will be a time of lots of ups and downs, as micro preemies have good and bad days, that can change in a matter of hours. Knowing and expecting this can make your NICU experince a bit easy to take. Have you or your wife been connected with social services at the hospital?
My daughter was born at 25 weeks, 1lb 1oz., four years ago, so I understand the situation that you, your wife and son is in. I recommend keeping a journal, to keep track of your son's setbacks, progress, and general thoughts. There will be so much information to process while in the NICU, it can be overwhelming.
If you would like, feel free to contact me through my preeclampisa forum email.