I got this on the right (lefty was always slower and calmer) in the early weeks. DD would come off gasping and get milk sprayed into her face by my jetting boob! In the beginning i had masses so i'd give one boob for one feed, so every other feed i knew she'd be in for a drowning!

What i used to do is feed from the left (or less full-on) side and simultaneously pump from the full-on side, just one to two pumps a minute, letting the let-down milk jet into the pump on its own, rather than pumping hard to get it out. Then once the right had stopped jetting out and i knew DD wouldn't be drowned by it i would stop pumping.

So my feeds might look like this:

5am: feed from lefty
8am: feed from lefty to get let-down and pump off the jetting foremilk from righty, then switch sides and feed from righty
11am: feed from lefty
2pm: as 8am

and so on. I ended up with MASSES of stored EBM - if there was any left at the end of a feed i used to pump it into the same bag/pot/container as the jetting foremilk, so i ended up with about 10 full days worth of well-balanced (fore and hindmilk) feeds by 8 weeks.

Bec