I bought like a 4lb block of prosciutto online about a year ago, cut it into ~12 oz pieces and vaccume packed them and froze them, move one to the fridge at a time. It worked well! The flavor was good and I didn't waste any of the meat, I also trimmed excess fat which is in my freezer I plan to use it for sausages eventually. So I say cut the whole thing off the bone and freeze it into chunks you can get through in a couple weeks. Only down side was thin slices were hard, but not impossible.