I have pork belly that I am making pancetta. I sealed it on 6/14/17 and it weighed 95.4 oz. Today (8/6/17) it weighs 81.8 oz . Per the instructions I read, I should let it get it to ~66 oz. (30% reduction) . The meat has shrunk, the bag is loose. Should I open it and re-bag it with a new bag. Any recommendations?