Nursing vs Pumping

Not sure if this is the right place to ask, but have any of you working moms ever successfully nursed your babies for a year (or more)? My goal was a year, but my supply tanked so badly I had to stop at 9 months. I work as an RN (3 12's a week, but really gone like 14 hours a day). I pumped at work but some busy days I just couldn't leave patients every 3 hours. I've read about some women EP'ing who make 50+ oz a day. If I EP for baby #2, will I be able to make it longer? I understand pumping is so much harder 😕 I EP'ed the last 3 months.