By Johanna Munson HERE’S HOW TO START THOSE AWKWARD CONVERSATIONS… The dining room table is already groaning with food, more people keep arriving, and the smiles on people’s faces express the joy and relief of gathering in person again. Then during the meal Grandpa loses track of the story he was telling and gets upset. “I’m fine!” he says and leaves the table in a huff. Or you notice that one of your beloved aunts has a tremor in her hand that wasn’t there last time you got