sIUGR diagnosis - mono/di twins

I am 23 weeks and was told that my baby B is sIUGR and to be prepared to deliver early.... 28-34 week range. They gave me worst case scenario as baby b not making it in utero or having to make the decision to clamp the baby b's cord to save baby a who is healthy. TTTS has been ruled out for now and I am being monitored weekly - moved to a MFM onsite at a high level nicu hospital so in case I need to be admitted I am there. I need some hope, some stories - anyone experience this?