I need to move from pumping 4X to 3X a day.
SLOWLY - given your history.
I think the easiest way to do it is to SLOWLY move the 4 am and 10 am pumps closer together until you merge them.
So, for 3 days pump at 4:10 and 9:50. (continue your other pumps to empty as normal). Then, if all ok, move to 4:20 and 9:40.Continue this way moving 10-20 minutes closer each time. It'll take a week or so, but the slow and steady pace will be MUCH easier on your body and help to avoid another problem.
Keep in mind that once you merge the two pumps that you may have to pump LONGER at that one to empty fully.
If that is the case and you find yourself pumping forever, then merge the pumps...pump til empty for a week. THEN...SLOWLY, decrease by 5-10 minutes while pumping as normal at the other pumps until things are "ok" or where you want them...
What EVER you do...do NOT go cold turkey.
Hope this helps!Amy
Yes, I second Amy's advice is to do this slowly. Amy gave you a good strategy, that basically, your 4am will become your 5am.