You are correct to be concerned about the shrimp.
I would prepare the recipe the day before up to the point where you cook the shrimp and add it in. Then, just before serving, heat the soup, cook the cut up shrimp and add it to the hot soup.
As a mater of fact, if you saute the shrimp before adding it to the soup. Cooking it for 5 minutes in the soup is too much for the shrimp. Do one or the other.
"If you want to make an apple pie from scratch, you must first create the universe." -Carl Sagan