I don't want to have to polish my car again, as I did it just over a month ago. But my car needs a new wax job!

Or should I just use a higher concentration of soap to strip the wax when I wash, and then wax?

like a capful then wash your car and dry. you wont have to apply more wax, you can add a new coat if you want.

I did the strip wash with Dawn dish soap, hand glaze, wax this spring. Till next spring it will just be wash and wax.