Trying to quit breast feeding...need some advice!

So I've been exclusively pumping since my milk supply came in because my baby wouldn't latch. He is 6 weeks and I just got engorgement this week and decided to just start the process of quitting pumping since I go back to work in a few weeks. I just started pumping every 4 hours instead of every 3 today and my engorgement of course is back. I'm using cabbage leaves 2-3 times a day for an hour each use and using a cold compress at times as well. Anyone else gone through this process yet or going through the same thing??