Anyone else’s milk not come in?

I’m 12 weeks post C section. The first few days were very difficult. Baby did not latch. I was hand expressing and pumping since day 1 (actually, before then, I was trying to collect colostrum). Everyone told me that a few days after giving birth my “milk would come in” and I would feel engorged. However I never experienced that. I went from pumping 1-2ml per session to 10ml to 15-20ml over a few months. I’m only able to pump 180ml (6 ounces) per day. I’ve tried everything. Just wondering if there are others out there with a similar experience.