She started falling so much again that I have decided that for the moment I am going to give up the pheno. Poor think would fall back in her own poop. end up sitting down when she peed, struggle so hard to get up. I am not sure it is worth it tooth's to her. If her knees and hips were not already so bad, it would be easier on her, but such a struggle for her. We go back to the vet in a week and I will talk things over with him and see what we can do for this sweet soul.
We used a harness when my German Shepherd lost most of the strength in his back end. Very similar to what Sophie is struggling with. I don't remember the brand we bought, there weren't very many on the market back then. But it helped us help him.