Mites don't just disappear. Just because you don't see them, that doesn't mean that they're gone.
Garlic doesn't do anything about mites.
I realize that you're trying to do your best here, but it's really not enough. You're not prepared to take care of them. I'm going to say for the last...
If they don't get proper feed, they're likely to have died a slow, unhappy death by that time.
Meat chickens and quail have very different nutritional requirements.
The reason for the quote, "If it crows, it goes. If it lays, it stays." is because roosters are loud and aggressive. You only...
It really sounds like you're not prepared to take care of them properly. If you can't get them food to meet their nutritional needs, at best, they're going to be stunted, sick, and not very happy. At worst, they're going to die.
Please give them to someone who can take care of them.
First off, what kind of quail are they? They don't quite look like coturnix, buttons, or bobwhites.
Second, get some game bird starter for them. They look terribly malnourished and ill.
Third, they need to be treated for those mites. Try some Ivermectin drops on their skin.
Fourth, get...