Take the large chips out and put in non slip surface. I used large shavings once and it is too hard on both legs to get around in the deep shavings and made the bad leg worse and strained/hurt the good leg.They’re babies.I have a d’uccle chick in the same boat first time incubating eggs, I noticed the curly toes on about day two and when I took the shoes off her, her toes were right she was hopping around on one leg. Her Achilles is defintely slipped but her leg moves in ways it shouldn’t suggesting a torn or damaged collateral ligament. I have her leg bandaged but she hates it, cheeps a lot and way less mobile. I tried to make a standing chair support for her to keep the leg in the right rotation but the little brat kept getting out of it. Debating about whether to cull her if bandaging doesn’t work. As a bantam I think s(he) could do fine as a one legger but I worry not so much in a flock with larger birds she can’t get away from easily :/
You might be able to carefully tape the tendon in place but monitor it so you don’t do more damage.
Take big shavings out.