OK, I am going to TRY to implement these strategies:

-I will say "Let me know when or if you need help."
-I will preface any session to help with, "I will look at this and try to help you IF you promise to be attentive and respectful while we work through it. If you aren't, I won't be able to help."
-I will learn to walk away.
-I will not engage in the Power Struggle.
-I know he WILL outgrow this!

Thank you for all your suggestions, and knowing that we are not alone!