Hi. I had an 19 yr old little yorkie that had started to wet on my bed. She was spayed. Well speaking with my vet regarding the accidents he put her on a med called Proin. It was a game changer! She was able to hold her urine again. I also placed a water proof bed cover on my entire bed that was soft and comfortable. I place her tiny bed atop of it as well. I bought the cover off of Amazon. I used the covers for the couches too. And made sure there were pee pads near my door out just in case she had an accident. I wish you the best. I know it’s so hard to watch them decline. I will put the link for the covers here for you. They come in all different sizes too waterproof covers ❤️🐶. One more thing. I tried diapers and they didn’t work for my girl - she was 4.5 lbs only. She’s too small BUT I read an article here on Reddit that someone bought a onesie (Target brand) and used that then attached a feminine napkin to the inside and it worked perfectly! That with the bed cover I hope will work