I am so sorry your pup is so very ill. If he is fine during the day, I would wonder if perhaps the medicine is causing this. Have you called your vet about this?
Another thing I would do is to limit his ability to get under your sofa and in other spots. Do you have a crate? He would be better off confined so he cannot bang his head or run into things. Maybe a soft sided carrier would be best if you have one.
Definitely speak with your vet. I totally understand that you don't want him to suffer. That is something you need to discuss in detail with your vet.
I will keep him and you in my thoughts and prayers. |