@TinaLoui i apologize I haven’t read the whole thread, and normally I would before responding.
Need tea is anti microbial, antibiotic, anti fungal and anti parasitic.
You get it on Amazon or at a health food store. Be sure it’s organic, best is USA harvest.
Pour near boiling water over the leaves and steep maybe an hour then give to your bird. ******Many don’t like the taste so watch carefully; don’t leave it to a 10 year old to tell whether it’s drinking or not. At my house only one bird, the oldest, refuseds it.
That should be the only water source for 24 hours. It’s good for bathing as well- resists parasites.
That might, and I only say might get your bird turned around. In my opinion though this bird likely has many vitamins and minerals deficiencies. Sorry auto correct is taking over but you get it right?
It’s impossible to come back from these overnight especially if illness is also a factor.
The bird needs a better diet immediately. It needs a good multi vitamin, calcium in liquid form, and minerals NOW. Perhaps at half dose due to its weakness.
If you don’t like medication find a holistic vet (no w, do online search for holistic). If it’s the cost putting you off, I suggest you rehome your pets and don’t get any more.
I’m not a vet, vet tech, nurse, or anything. Just a gal with lots of birds, some experience, and an aversion to harsh medications.