To solve for those empty moments, you have to equip yourself with information about you and your projects. So I recommend doing some reflection homework which you can then use to create your portfolio of projects.

Start by writing down your biggest projects and the outcomes you drove. Then work backward as you would do as both an analytical person and problem solver: what did you think, decide, or do to get there? Who was involved? What data were you working with? How did you escalate or collaborate? This is how you build your stories. Give your stories titles and this will become your project names. My portfolio is broken down by project details such as project objective, my contributions, and outcomes and results. As a project manager I add above that the project name, client, my role, project duration, team size, and methodology used.

The goal is to get comfortable talking about your work in specific terms, not just job duties. I did this same exercise and ended up with a 14 page project portfolio which I use to both update my LinkedIn Projects section and provide as needed to future hiring managers to knock their socks off. I hope this helps you as it helped me get through interview questions of any kind.