Boil 1/2 water add 2 teaspoons of honey.
press one lemon and add the juice to the water and the honey.
Allow to cool off drink small sips throughout the day.
Use a humidifier in your home for years, it evaporates more than 4 liters of water per day, my hoarseness has long been gone, I forget the evaporator comes back the hoarseness after a week
Eating a few apples, especially sour apples help good; even if you lost your voice.