Seek your physician's assistance so your nutritional intake may be monitored. Surgical intervention is the extreme end of treatment for these difficulties. Care must be taken in any corrective surgical procedure because of the weak, underlying muscles. Vocal cord weakness can be a problem for some and speech therapy is helpful in providing compensatory techniques. A small microphone to amplify the voice can be prescribed.
Fatigue seems to play a role in vocal cord weakness.
Tell people what you can and cannot eat. Sometimes it may be better to be up front and say no to their desire to feed you. A solution at restaurants is simply to eat ahead of time, or after. Drink a protein shake before going to a friend's house and then nibble. At restaurants, instead of a large meal, order an appetizer to be served with the dinner course.