2 week old chick wont stay in sling

[warmnfluffy]

I have a chick that has a slipped tendon. I've tried to make multiple sock slings for her but she tends to end up wriggling out one way or another. I haven't tried the slings they use for adult chickens, but I feel like she would just as easily hop out of those too. I have tried putting fabric over her wings to help stop but it hasn't. Anyone have any types of slings or tips that could help?

 

[Yardmom]

I know there is a recent success story on a thread. The chicks name was sock.