Hi Marjorie,
Thanks for reaching out! I'm happy to share some recommendations that might work for you. With Storyline 360, you can publish a single scene instead of the whole project. Consider publishing just the scene containing the validation quiz so you can test without needing to view the entire content.
Another possible approach is temporarily placing a button on the first slide with a Jump to Slide trigger that links to the validation quiz and then publishing the entire project.
Let me know if you have questions, and I'll be more than happy to assist further!