The vet must have thought he was quite unwell to say he wouldn't survive a week.
Definitely he could do with at least a week of daily antibiotics, whether natural or artificial (or both). Probably until he clears up and stops coughing or showing respiratory issues, he should stay on antibiotics.
If you can get fresh green grass for him, or sprout some edible seeds for him, that would also help; fresh greens contain chlorophyll which helps detox the body and also gently helps clear the lungs.
His liver will be tired if it's fighting to clear infection from his bloodstream all the time, so fresh greens, well fresh foods of many sorts really, can help it.
Even a raw onion, minced up for him, will help clean his blood; herbs, fruits, vegetables added to his diet can provide a lot of health benefits. (I don't know if you're already adding those to his diet but it can help a lot.)
If he's survived so far, there's a chance, but clearing him of infection must be done. Without infection in the way, the body can heal many terrible wounds.
All that said I don't know exactly what is wrong. I hope he makes it.
Best wishes.
Definitely he could do with at least a week of daily antibiotics, whether natural or artificial (or both). Probably until he clears up and stops coughing or showing respiratory issues, he should stay on antibiotics.
If you can get fresh green grass for him, or sprout some edible seeds for him, that would also help; fresh greens contain chlorophyll which helps detox the body and also gently helps clear the lungs.
His liver will be tired if it's fighting to clear infection from his bloodstream all the time, so fresh greens, well fresh foods of many sorts really, can help it.
Even a raw onion, minced up for him, will help clean his blood; herbs, fruits, vegetables added to his diet can provide a lot of health benefits. (I don't know if you're already adding those to his diet but it can help a lot.)
If he's survived so far, there's a chance, but clearing him of infection must be done. Without infection in the way, the body can heal many terrible wounds.
All that said I don't know exactly what is wrong. I hope he makes it.
Best wishes.