Ok what am I doing wrong? DD2 has reflux, so that might be part of the problem...

But, when I try to put her in the Ergo or in the ring sling, she keeps stiffening up, arching her back and fussing which makes it impossible to get her in securely. She won't relax - she used to sit so sweetly in it. Does this mean she doesn't like it anymore? Is she uncomfortable?

I tried to get a picture but I couldn't safely get one.