I've been trying to advise people to keep using N2Guard for a couple weeks AFTER they finish their cycles and I like your idea of fronting for a week two.
People think that just because they have stopped taking the AAS that it is no longer putting a strain on their body or their liver, but your body is still processing what you put in it and your liver is under that added duress for a little while longer. I personally ran it for an extra two weeks at the end of my oral cycle last year and recommend others do the same.