Salam! I totally understand lah, the engorgement and pumping schedule memang exhausting especially when you're planning to go back to work soon. A few of my mum friends stopped breastfeeding around the 6-week mark and they either did it gradually (reduce pumping sessions slowly) or saw their doctor about medication options to help with the engorgement and stop production faster, your gynae can advise which is safest for you especially since you're mixed feeding. One of them said the gradual way was less painful even though it took longer, and another swore by the medication route because she couldn't tahan the bengkak anymore, so it really depends on what your body can handle! Best to chat with your doctor about your timeline and options lah, because every mum's recovery is different and you want to do what's safest and most comfortable for you.