Already tried that training scheme, with good success...
Fresh from the Youth Academy...
After 6 rounds of the above training, using the 'Attacking Midfielder' regime, 121* rest packs used.
*More used than anticipated per above as my training drills are only '3 Whistle' level whereas the author of the scheme is 'Globe' level.
I'll say the training scheme works, but whether it works the same with all players of same age and starting Quality remains to be seen. I'm not ready to fully endorse it without further trials, but it looks impressive for now...