Severe Canker In Fledgling Woodie

[amyable]

Hi,

I've started this new thread about a young Woodie brought to me last night. I had mentioned it in another thread I have.

I've started it on Metrondizole and it's had three doses so far. Also have given it a Spartrix, ground some up into powder and sprinkled it around it's throat area in the hope it might start to break up the large nodule blocking it.
There's hardly any opening visible in the throat, but I have put the syringe down as far as I can until it reaches some resistance and hopefully got the medication through.
Problem being I syringed some watery PolyAid as far down as I could as he's obviously starving looking at his poops. The first feed seemed to go down ok. The second time I tried later, no matter how slowly I did it or how small an amount I gave him, it seemed to 'back up' and he was in danger of aspirating.

When I went to give him his next dose of meds just now, he was almost frothing around the edge of his beak, and it was very sticky, so it must be the Polyaid coming back.
I thought I'd lost him as he started to stretch out his neck, (like I've seen in others when they're about to pass). I got a cotton bud and gently teased it down his throat to try and open up a hole, wiped the sticky off his beak, and luckily he's calmed down and is breathing better again.
He's lying quietly now but I'm concerned that I can't feed him anything, and if PolyAid won't go through, how can I sustain him?.

Rightly or wrongly, I've given him another half Spartrix hoping it will help start to disperse the blockage in his throat.
Is there anything else I can do for him?

Janet