I tried looking it up but Wiki was blocked, and couldn't figure out the keywords to look up his practice regiment cause everything on google was about his neck surgery and returning to practice.

but I used to hear all the time how he took those snap in practice to build that rapport with every receiver in the depth chart, which was why Pierre Garcon had such a smooth transition into the starting line up. I especially remember hearing it around there.

but no, I don't see an article or anything to the effect. Thought it was common knowledge.