That would be best, as long as he understands herxing. There is so much cross over with symptoms from one infection to the next that it can be very difficult to determine what infection is causing what symptoms.
So you are taking herbs as well? Are you on them now? That would definitely increase your odds of herxing from more than just Lyme treatment.
I would encourage you to increase the number of things you are doing for detox though as well. Get as many detox pathways as possible working better. We have a good list in the "New to Lyme?" thread and this link has a lot of great suggestions as well:
www.tiredoflyme.com/detox-methods.html