time on activities designed to recreate specific moments in the game, and give the players as many repetitions working through those moments as possible. Give a few guidelines or corrective interventions to the players, but mostly let them develop their own creativity and decision-making in those moments - "let the activity do the teaching" is the common refrain. One whole practice session should focus on just one principle or moment.

Everything I hear and read from the "experts" these days is that less is more, i.e. kids want to play more and hear from the coach less.

That said, it sounds like your ability to help depends on what the assigned coaching staff is willing to let you do. It ultimately has to be up to them.