If those white stripes are fully blown out in the JPEG, there’s no real image detail left to recover. Lowering exposure can darken the white areas, but if they’re clipped to pure white, the texture is gone.

With only a JPEG, your chances are essentially zero for true recovery. A RAW file sometimes gives more highlight latitude, but even RAW cannot restore detail that was completely clipped.

Your remaining option is retouching rather than recovery: clone/heal in texture from nearby areas, possibly on a separate layer and using blend modes like Darken. This can work for small areas, but it takes time and skill and may not look perfect.

To prevent this next time:

• reduce exposure so highlights don’t clip
• shoot RAW+JPEG
• lower scene contrast with sheer curtains, diffusion, reflectors, or added light
• use any dynamic-range expansion mode your camera offers
• bracket exposures

In general, it’s easier to lift shadows than to restore blown highlights.