I had a turning point at about four months. It was so subtle, all I really noticed is that I could eat a little bit better. I no longer had to take a drink of water to get every bite down. Since then, it has slowly (and I mean slowly) been improving. I have found it helps a lot to chew gum. Specifically, I get Spry gum from my dentist's office and when I'm chewing it I can almost remember what it was like before head and neck cancer treatment.