In order to run OCR for wider images, some users suggested a workaround to crop the image, run OCR for the first half, then restore the image to the original size, crop again the second half, then run OCR again and finally restore the image to its orignal size.

There are two bugs with this approach:
1) It is only possible to restore the image to its original size when using the option "Searchable Image (Exact)".
2) After re-running the OCR for the second half of the file, the OCR for the first half is dumped.

This is also a topic of the Support Community:
https://community.adobe.com/t5/acrobat/image-too-wide-for-ocr/td-p/11619072?page=1