I understand where you’re coming from. “It’s sick. Let’s fix it.”
I might be an animal, but you’re no veterinarian.
This horse might not be dead, yet, but you’re not the right person to kick it over.
Let sleeping dogs lie, even if they’re having a bad dream.

I’d rather be a horse; I’d rather be a dog, than what I am now.
I need help, but you’re not helping.

Please, please stop trying.
You will only make things worse.
You will only wake the dog.