Weight loss & breastfeeding

Have any of you breastfed and managed to lose baby weight at the same time?  I've always heard breastfeeding helps with weight loss but it doesn't seem to be the case for me.  I am 10 weeks PP and struggling with milk supply when I decrease my calories and increase activity.  Obviously feeding my child is most important, but I'm getting frustrated with the SLOW weight loss.  I can't figure out how to balance my calories and activity so that my milk supply doesn't suffer!!!  I am trying out Weight Watcher's for nursing moms and it just doesn't seem like enough points since as soon as I eat above my points my supply goes back to normal but the scale doesn't budge 😩😩😩😩😩