I store all of my cigars in the 60-64% range. They smoke perfectly and, imo, better than when kept above 65%. I think most agree with this. It will take longer than a week to get them where you want them. Several months even. I would take all humidification out and monitor it and let it come down slowly.
I have several coolers that I don't use any humidification in and it stays perfectly at 64%. I see no problem with short-term over humidification as long as they havn't swelled and cracked the wrapper.
Oh, and fwiw, I know botls who store cigars in the 50's, long-term, with no problems.