My Mum since about age 70, she's nearly 90. Maybe your throat has dried a little, after all the rest of the body dries at this time of Life. Mum has a glass of cold water which she sips between mouthfuls. Have a look at your diet and make sure that there is plenty of liquid-type food for a while, i.e. soups, wet curry rather than dry, if you stir-fry then put plenty of tinned tomatoes in the mix ……. you will learn to eat without choking as you adapt.