66-70 is pretty standard to the primary, but not everywhere gets that amount, 62Gy to nodes, lesser to salivary glands, etc. My swallowing is like a roller coaster sometimes. Medications can effect dry mouth, certain foods require more chewing, and my swallowing diminishes over timing in one meal, so I don't eat large portions, and tend to eat moist foods, casseroles, soups, more fat in meats, poultry, butter, olive oil to help swallow, and water. I also eat food warm, not hot. Tell the doctors, and see about the anxiety, possible meds, counseling, support groups. Good luck.