Circumcision to a premie?

My boyfriend and I were just talking about if we wanted to circumcise our baby or not. I’m high risk for premature labor because of incompetent cervix ( my last baby was born at 26 weeks) and I was wondering if they even circumcise premies? Do they do it right away or after they’re bigger and less likely to get an infection? We were leaning more toward not circumcising anyways but I’m still curious.