thank you for the reply's!
Received some great responses and we are going to utilize some. He does have Jaeger bands and will utilize them in his workout/ramp up.
It isnt an exact science for sure, especially with a kid who basically just took his first real arm break ever and began regularly working out with a trainer for the first time.
Just trying to do the right thing and not second guess myself(or give my son the impression that I am making this up as I go along)
Starting up today Hope to have him ready for mound work by early -mid Jan.