Have only just found and read through this whole thread.
What can I say but poor, brave, beautiful boy! And I know you will do whats best for him (whatever that may be).
He is obviously a very special little bun. A right little trooper.
I have never seen a bun in that state before, but know that you are doing such a wonferful job with him. I dont think I could be as strong as you!
Fingers crossed all will go well. Will be thinking of you and Otto tomorrow.
Hugs for you, and nose rubs for Otto. x