Weight watchers

AN • will be having 2 babies about a year apart
Has anyone done weight watchers postpartum? If so, when did you start? I've gained way more than I should due to the fact that my metabolism has shut off. I've always had a love affair for food, but I've been lucky enough to have a decent metabolism. No more!! 
I plan on breastfeeding too. If anyone has any insight on doing weight watchers while breastfeeding, I would love to hear it!!