TomnJen I made an offer to a person who was contemplating getting a rescue that was in very bad shape. Never did hear from them, not even sure they adopted the animal (doubts).
So as a goodwill to help you with your dog , particularly since you have been put through an emotional wringer with battling parvo and some issues that will take a long time to resolve , I would like to extend an offer to you which is to provide you with a source of high omega 3, one from fish oil - dha / epa , and the other through camelina oil.
One is Sh-Emp (fish) and the other is Power of 3-EA's which has camelina oil, African Red Palm (compete profile vitamin E) and unrefined Rice bran oil . I'll also through in a Sunday Sundae .
There is no charge . This will assist in your recovery. Do see a vet -- you may want to spritz some Vetricyn around the nail bed to prevent bacterial infection.