Three kids overnight!!!!

Charity
So yesterday me and my SO received a call. A distant relative came in contact with CPS and had their three week old twins taken. Over night our small and chaotic family tripled. Last night was the first night. I'm in school full time, my SO is in met school and working full time. We feel very lucky but also overwhelmed. Are larger community is asking what we need. What are the essentials for infant twins? How do I help my seven year old adjust, he has an anxiety disorder.