I found an old stenobook with my writing of the timing on the back of an extra steno book. This way I would never loose the timing sheet. This was before cell phones were common and having the timing easy access as a PDF or something else saved and easily retrieved.
I just thought you might like to see how I did this so if you want to do something similar.
"Gregg Shorthand had achieved the most extraordinary success ever attained by any system in the history of shorthand." John Robert Gregg, 1922