Hi. I'm founder of Readlax. There is good exercise to block subvocalizing, it's read text by Readlax chrome extension and at the same time counting from 9 to 1 (9,8,7,6,5,4,3,2,1). It help u read by eyes and block subvocalizing. This technick train brain. We will add this exercise in next release of Readlax Extension