6 year old's headaches and neck stiffness resolved as well as improved sleep

My 6 year old son came to Dr Nicole with severe headache and neck stiffness. After the third session, his headache went away completely and he was able to move his neck fully. He also fell asleep so easily that night and the night thereafter and even fell asleep in the car on a trip we took over that weekend. He has never ever fallen asleep in the car before, and he usually struggles to fall asleep at night.