A couple of Atlas corrections may not be enough. You may need to do some home therapy by avoiding bad head and neck posture while sleeping and resting. It takes weeks and even months for the ligaments to tighten properly to hold atlas in proper position.
I just order a LLLT system to try to help ligaments and tendons heal better. This is what I ordered.
http://revivelighttherapy.com/produc...-light-therapy except I ordered it from Walgreens because their web site says it comes with a second LED head for red 625 nm light.