I had a son via C-section two years ago. Expecting a second baby again via c section. 30 weeks along. In which week my cesarean should be done?

C section. Have your scheduled c-section as close to your due date as possible for best results.
After 39 weeks. Current recommendations are to delay an elective delivery until the completion of 39 weeks. That means you should schedule your repeat cesarean 7 days or less before your due date. Hope all goes well with your delivery.