I do not have any experience fostering dogs. The only experience I have in fostering is with a cat. The local shelter called me to see if I could take care of a newborn kitten. She was about two days old. Someone found it in their yard and brought it to the shelter. So I brought her home, and nursed her. That was well over a year ago...... She is still here

I just could not take her back. They have so many cats. I just could not bear the thought of her going back and not finding a good home.
I think it may be easier if it were a small dog. They are very rarely in shelters here, and when they do turn up they are adopted very quickly. But then again, it is so hard to give up any animal once it becomes part of the family.
Sorry not much help, but maybe a bump to the top will assist you.