Under the current NFL rules the only real opportunity to set tempo and intensity on the field is in training camp and even that is greatly reduced from past eras.
What you can do in rookie camp and mini camp is establish tempo and intensity off the field, by demanding and enforcing that they be on time & attentive to meetings, learn the playbook and push hard in the gym/meet physical targets.
We cannot really see if it is American or Asian Mom until training camp but if they arrive at training camp looking confused and operating at walking pace again it will raise questions about what went before.
What you can do in rookie camp and mini camp is establish tempo and intensity off the field, by demanding and enforcing that they be on time & attentive to meetings, learn the playbook and push hard in the gym/meet physical targets.
We cannot really see if it is American or Asian Mom until training camp but if they arrive at training camp looking confused and operating at walking pace again it will raise questions about what went before.