Laura Sobiech is the author of “Clouds: A Memoir,” a book that chronicles the final year of her son Zach’s life before he passed away from osteosarcoma in 2013. Her book has been adapted to the big screen in “Clouds,” an original movie streaming now on Disney+. Fin Argus plays Zach Sobiech, and Neve Campbell  plays Laura Sobiech. “Clouds: A Memoir” by Laura Sobiech. Fin Argus, who …