Hi, Jojo

I would like to ask you for advice in a particular case here. I have a few bottles of scotch that I would like to keep unopened for a long time lets say 20+ years. I read throughout the whole forum here and I learned that I have to keep those bottles out of light and out of heat. I can take care of that, I keep those bottles in a small wine cellar that always stays at 66 degrees and there's no light getting to that cellar. Bottles are in upright position. Here is the tricky part I need advice about: I live in Arizona and as you know it's a very dry state. I wanna know how to keep the cork from drying out and shrinking and as a result letting air gets in the bottle and the scotch evaporating. I read the part where you suggest saran wrap. Do you think that will help in my case? I also thought of flipping the bottle upside down every once in a while for a quick second or two. The bottle will stay in upright position so the cork won't affect the quality and the taste of the scotch, but flipping it quickly will just let the liquid wet the cork and prevent the drying of the cork. Do you think that might work, and if so how often do you suggest I should flip the bottles for a second or two? Any other suggestions?
Thanks for your time