[deonk1]

I would look into some different trainers in the area, I know the trainer I work with allows young dogs in agility classes; however, modifies the jumps to be poles instead do the dog learns the concepts but doesn't exert themselves to hurt themselves.

I also recommend using a 2x2 method of weaves. Susan Garret has great information on how to do this. It slowly introduces the concept of weaves so as to not put too much strain on joints.

There are many great exercises and flat things you can be working on with a pup, such as circle work, start by having your pup work in a circle around a pylon, as your pup gets better at staying at your side, make the circle bigger (so you're between the pylon and the pup).

Harley and I started our first life skills class around a year then moved immediately into the agility classes, we just didn't put height to the jumps until he was old enough. We actually did our first fun match yesterday and did awesome!

Another great thing you can do is nose targets, you teach them to touch your hand with their nose and eventually a target (we use a container cover) then you start putting these targets on the ground, and it starts teaching them to touch contact zones with their noses so as to not miss the contact zone when running on a dog walk or a frame.