David I’ve been where you are several times and watching a beloved pet fail is so very hard. I joined this page but found in my research they do get paid commissions from Chewy.com when pet owners purchase from links here (that said there is still good info here and I like the forums). I spent the best $10 ever to find a better food from my dogs at this page: http://truthaboutpetfood.com/the-2017-list/
I went on every single page of the 19 foods and did hours of research. For mobility my dogs have greatly benefitted from laser and acupuncture it sounds like there is pain going on. Sending prayers!
