I have a 3 1/2 month old moose who is probably nearing 25+ lbs. He spends most of his time being toted in the sling while I chase his 2 yo brother around. I always wear him on my right shoulder and now I am experiencing some serious numbness and tingling on that arm and hand. It's been progressing over the past 2 weeks from an occasional hand tingling while I drove to a total arm/hand tingling today that is just not letting up. Any of you other big babe mamas out there ever experienced this? I would really love to be able to carry him in something that distributed the weight more evenly, but I think he's way too big for say a Baby Bjorn and he's still too wobbly for the back pack. I'm at a loss. I need my right arm. (And yes, I've started slinging on my left arm, too, but the numbness is continuing.) Thanks in advance.