We cheated a little and let ours off after the first vaccination at 7weeks.
But only in a nearby field where we'd never seen any other dogs go. He would wander/charge about, but always followed us and was never more than a few metres away.
Now at 15 weeks he runs around in the woods, always follows us and so far always comes back to his name or a whistle. Our problem is getting him to walk well, if at all on a lead
......but thats a whole other topic!
Have fun in the sun!