By four months, even in the most conservative circumstances, the athletes are doing everything in a stable environment. All that’s left is a gradual process into full contact training.
I had one kid running at 8 weeks, but most are around 10-12 weeks.
We do the sub max eccentrics too that James mentioned, as I got that from Buddy, overloading the contralateral side to achieve cross-education until we can load the injured limb, and then putting the brakes on the strong side until the weak side catches up.
As it’s a 9 month process in most cases, everything is slow cooked.