Scheduled c-section

Hi mummies! I am diabetic and scheduled for a c-section in 5 weeks exactly. I am currently seeing KKH. Has anyone here gone through the same thing? Were you instructed to check-in a day before the c-section for any 24 hours monitoring or do you check-in the same morning of the c-section? Apparently the doctor hasn't been clear in the details and seems to be rushing to see patients. So didn't really get to ask her much. I have another appointment in 2 weeks.