Not directly. The embedded JPEG preview is a processed in-camera rendering, while the RAW file is unprocessed sensor data. That means the JPEG’s look comes from camera processing such as white balance, color profile, sharpening, and noise reduction, and Lightroom won’t perfectly copy that automatically.

In Lightroom, the closest approach is to use a camera-matching profile (such as Camera Standard instead of Adobe Standard) and then manually adjust white balance/temperature/tint until the RAW matches the preview.

A practical workaround is to view the embedded JPEG preview and sample colors from it with a color picker, then use those sampled values to guide your adjustments in Lightroom or another editor.

So: yes, you can approximate the preview JPEG’s white balance on the RAW, but generally only by manual editing rather than a one-click transfer from the embedded preview.