Is there anything we can do to get our milk supply to come in quicker? Worried about not having any during the first few days.....

my daughter was a preemie so she had to be in the NICU. for the first few days she didnt latch because she had a lot of tubes on her. so i pumped immediately. my milk came in a day after i gave birth. but mine is a special case. pumping (for at least 2 weeks) is not advised for normal situations because it might cause oversupply.