My beagle was diagnosed with IVDD in his neck. He is unable to pee on his own and will not let us express his bladder. The vet has been catheterizing him but told us we need to think about putting him down. Is there anything I can do to help him pee? I feel like he is holding it because he has never had an accident before and even crawls out of his bed to do number 2. I’ve read online about VetriDisc. Is this a legitimate option for him?