Do you have friends you trust and that are calm around dogs to be able to generalise your handling training with?
I have 2-4 people I rotate through including one male friend.
I do this before I then ask unknown people to Ruse to help me, typically it’ll be a mentorship student. Then I go back to known people again before I ask someone he doesn’t know to handle him.
Something to think about when we start to push the training…
Who can you ask?