Child Torticollis right side

My son is 2 years 8 months. He was declared Torticollis at 6 months age. Physiotherapy helps but still lot to be done. In last 1 month I can conspicuously see that his right side of his face is smaller than left, especially at the cheeks.
I need a cure for this without surgery. Here are his symptoms:
1. Right Torticollis - doesn't want anyone to touch / massage his neck. Starts crying.
2. Sweats at night especially head. Doesn't like to sleep in blanket even if he is feeling cold.
3. Doesn't like to like to eat food, unless he is really dying with hunger. Have to force feed him at meals to keep his height weight on normal growth. His growth is as per normal growth curve.
4. Active indoors but as he goes out wants us to hug and carry him.
5. Tongue is normal. Clean on sides. No froths. Whitish at times.
6. Skull above the right ear is more protruded than left. Left posterior skull is more depressed than right.

Any guidance and suggestions will be highly appreciated.