So as a reference, my Yukon was 9 going on 10 when his back end degenerated and he had C spine issues. That was 9 months ago. He is stabilized at this point and happy. I don't walk him at all because of his condition. Small little walks in the yard, etc. He's still full of life but cannot walk for a big hike at his young age because of his back end. This dog was the most athletic dog I have owned and I feel he got struck down early for the activity level.
Sometimes we have to just go with the situation. I expect Yukon to hang in there for quite a while, but I'm not happy he can't go for walks anymore, especially with the young Griffin. I am happy he's still around though.