OCR: Tesseract White letters on black background

Hi, I got Tesseract to scan a document until it found white on black letters and then it stopped scanning the rest of the document.
How can I improve the scanning of this area and the rest with the Ready Action?


Advance in my research. I could finally the rest of the document but the white on black was not able to read. Suppose a training process must be done.
Now, only parts of the document I would like to read, those within the boxes, any suggestion on how to approach this? Or is it best to hire a SaaS that can do it. Any suggestions are welcome.