Chiro is not dangerous. If it was, they would have high malpractice insurance premiums. Their malpractice insurance is much less than an MD's.

An upper cervical chiro would be a good start. There are some links at the bottom of the first page of the vitamins sticky. NUCCA and Atlas Orthagonal are listed. One of the moderators also has a link upcspine or something like that.

A good physical therapist can help with gentle traction and mobilization. But, you have to find the one that works well with your neck. All therapists are not the same. I've seen 18 different chiros over 32 years. only 4 were good with my spine. I've seen a dozen PT's. Only 2 were any good.

Neck treatment is going to be no better than your sleeping posture will allow.