@2Gerootheducky , I read your private message, but I did not read the whole context of the thread, so please excuse any redundancy.
The treatment I suggest and personally do for all sick birds I deal with is mentioned below.
With birds not eating adequately, we should compensate for the predicted loss of metabolic heat output by increasing the ambient temperature in their pen ( in most cases that will be near 80F).
If you have a scale on hand, I also suggest weighing the bird daily each morning to determine if there is a dramatic decrease in weight, which would require supplemental tube feeding.
To keep the bird adequately hydrated, you can offer a warm electrolyte fluid, or sports drink diluted down often. In the case the bird is not willing to drink at all, we would have to be more dramatic with our measures to correct the fluid deficits ( tube feeding for example).
In almost every case, the simple measures of keeping the bird adequately fed, warm, and hydrated is the most vital part of dealing with sick birds.
The diet you are feeding is not perfect, so there could be a nutritional-related issue. In that case, I would try to find a nutritional supplement preferably for birds, but if you find one for babies without iron that might work.