Hey Ashley,
If you are concerned about your latest build, there are several ways to mitigate this issue. You can stop a build by following the instructions here: Stop or activate builds | Netlify Docs
You can also update your site by running a build locally with the CLI and then creating a deploy manually with the CLI or the API.
You can stop a deploy by following the instructions here: Manage deploys | Netlify Docs. I would recommend reading more about the upside and downside to these methods.
You can also check a deploy’s logs to investigate further: Site deploys overview | Netlify Docs
Finally, here’s more information about how to optimize your build time: [Support Guide] How can I optimize my Netlify build time?
If you have any questions, I’d be happy to help!