Just leave it. Its sealed right? no leaks? then its gonna hold pressure off the gas. leave it be, adn then you only have to chill it again and then start dispensing.
commercial kegs are shipped around fully carbed adn ready to be tapped as long as they're chilled in advance.
ditto on those heiniken mini-kegs.
Primary: English Mild
On tap: Pale Ale, Lancelot's Wheat, English Brown Ale, Steam Beer, HoovNuts IPA
Bottled: MOAM, Braggot, Raspberry Melomel, Merlot, Apfelwein, Pyment, Sweet mead, Cabernet
Gal in 2009: 27, Gal in 2010: 34, Gal in 2011: 13, Gal in 2012: 10