to sleep?

package.json

@@ -34,7 +34,7 @@
         "watch-front-p": "yarn front yarn watch",
         "start-back-p": "cd backend && python manage.py runserver --settings production --insecure --pythonpath ..",
         "start-p": "yarn static-p && yarn watch-front-p & yarn start-back-p",
-        "codegen-once": "yarn start-back & yarn front yarn graphql-codegen && exit"
+        "codegen-once": "yarn start-back & sleep 5 && yarn front yarn graphql-codegen && exit"
     },
     "devDependencies": {
         "@angular/cli": ">=15 <16"