Diagnosed With Cervical Stenosous & Dandy Walker Variant. Can T Breathe Normally. Feeling Like Diaphragm Moves. Tired. Suggestions?

I would like to know if there is a neurological problems that can casue breathing difficulties. I have been diagnosed with cervical stenosous and possibly dandy walker variant, I hae constant c and feel like I cant breath normally or automatically, I have to concontrate on my breathing. If I turn my head and neck a certain way and hold it then I can breath naturally , deeper and evern my diaphram moves, I am very tired all the time and snore and have apnea at night. thank you for your help.