Does he still have his strength? I had one that had it almost that bad and he pulled through after 6 trips to the vet and $450. That's usually not the case though. Hope yours pulls through. Keep us updated. Are you forcefeeding?
No im not iI have to hold the worms really close to him and sometimes help him out but he still shoots just fine. Yah the vets gave me drops for his eyes and they gave him a shot. There still though so who knows hopefully he gets better
Good luck with him and try and keep his mouth sores as clean as possible. If there on the outside, put some hydrogen peroxide on them a few times a day. It seemed to have worked for mine. Keep everyone updated. David