Quail chick keeps breathing heavily and weak, don't know if I'm doing this right!

[TrueArrow08]

So I recently hatched 8 adorable quail chicks, and they are all fine until I got back from an hour long shopping trip yesterday and one of them (the most lively and curious) seemed to be struggling to breath. She kept yawning and stretching her neck out, as well as shaking her head violently as if she was sneezing. I listening to her breathing but couldn't find any sort of gurgling or wet sounds. We kept keeping an eye on her but she just kept getting worse and it looked like she was suffocating. We gave her a little water and she refused to swallow. I dont think she's eaten anything since she hatched.
Anyway, yesterday she kept getting worse until she looked like she was dying (stretched out, limp, spasming, throwing her head back with mouth wide open). We gave her some more water, hung her upside down (see if we could get water out of her lungs if that was the problem) and she's still alive and doing much better today. I looked up what to give her today and made bone broth with a little honey today and I'm off to get some electrolites and probiotics in case we need to help her. She's still breathing and swallowing heavily and she's a lot smaller than her siblings but we're giving her liquid and she's swallowing.
Update: just as I wrote that she had another fit. She's recovered now and had gone back to breathing heavily but she isn't doing great.
Sorry about the long thread but I'm very worried for her. Don't want her to suffer anymore but can't let her die that easily.