Glad I could help! Quite funny to live "just down the road" from a BWer - never happened to me before. There was another PL girl regular here years ago - her DD is Ozzie's age - but she was from the south!
I think a lot of pumping issues at this stage can be so psychological and the fact that you are doing something "tangible" is maybe helping the cascade of hormones and other things necessary for bigger output.
While I was pumping in work after Oscar, I just had to be in a room that was locked - if I could not find a classroom/cupboard (walk-in style) with a key and parked myself or some piece of furniture up by the door instead - it was no use - I would get 20-25% of usual output. The key was literally my "key".
Hope the output continues for you and any more help you need - IRL or otherwise - just yell! And we'll have to meet for a proper BW Polski meet someday soon - with my monkeys included!
S x