I'm considering bulk aging an American Barleywine in a glass carboy for several (3-6) months before bottling. I'm assuming all or most of the yeast will not be viable or active enough to carbonate in the bottles after such a long rest. I've read that additional yeast may be added before bottling, but I'm looking for information on when and how much to add. FWIW, I fermented with Wyeast 1056.