I read physiotherapy book in Thailand.

When patient has severe pain use mobilisation around that joint . you can adjusted force to spine it started grade 1-3. following use manual traction and have home program for patient (correct posture(chin in with pillow and chin in no pillow)and isometric ex's of neck muscle). At this time don't use stretching because it have pain when stretching.

About 3-5 days, if patient feel good but have numbness use mobilize nerve. and you can use mobilize spine T6-T7 for patient because it relax nerve. I have been use this method. It appears good for patient after treatment.

Don't forget correct posture it's important for patient.