You've done SO brilliantly!
When I stopped I'd kind of hoped (with consultant advice and support) that I could keep 2 pumps per day going, but I think that only lasted a couple of days before my milk dropped so dramatically that I was faced with the decision to go really full-on to get the supply back up or just stop. I was annoyed with the whole thing and felt awful. What you need to remember if/when you stop for good, no matter how sad or angry you feel about it, is that you have done SO well, and that you will have more time and energy to give a different sort of attention to your LOs.
Big hugs, it's hard. Big big hugs xx