Cornell offers multiple resources for students with families. The main portal for these is located at: https://studentswithfamilies.cornell.edu/. There is also a Facebook group at https://www.facebook.com/CUstudentswithfamilies.
One of the most important things to know is that the university provides graduate students with the option of either six weeks of paid accommodation (for students receiving full funding from the university as assistants–whether as TAs, GRAs, RAs or GAs; fellows; or trainees) or up to two semesters of reduced load status to serve their needs surrounding childbirth, adoption, newborn care, foster care, and acute child health care. More details are available here: https://studentswithfamilies.cornell.edu/expectant-students/policies/.