After 24 hours of only vomiting once or twice I give my dog bland chicken breast and white rice in a 50:50 ratio. I boil or steam her chicken. I'll give that to her for about 5 days then go back to her normal feed. This is what I've done, but I'm not sure if your vet might have a better recommendation. Along with any answers here, I would also ask your vet for any recommendations. They know your dog best.
Hope your dog feels better, Cookie.