Feeling sad about weaning

Kaylina • Twin girls born 3/3
With a heavy heart, I've decided it's time to stop breastfeeding.  It'll be just over 8 months when I'm done. I had really wanted to make it a year but I've just reached my limit.  I feel like my body is just so worn down from making milk all day, every day.  It's been the hardest, most painful thing I've ever done.  I also went back to work last month and am finding it really hard to manage my schedule and find 30 min to pump every 3 hours.  But I can't help but be really sad about it.  I look down while I BF them at night and want to cry thinking that soon I won't do it ever again. I won't miss the painful nipples, the pumping for 3+ hours a day, the never sleeping for more than 5 hours, the frequent clogged milk ducts/ mastitis, the being chained to the pump every 3 hours, and the list goes on.  But I will miss the connection with my babes... it's just a reminder that they're growing up and I can't ever go back in time.  I know it's normal to be emotional, I just didn't expect to be so sad about it! Im also really nervous about transitioning to formula as I still can't get them to eat anything but breast milk, not even a little rice cereal mixed with BM.