You know. during the first few weeks I had the same exact problem. I just tried not to touch my hair alot shake my head too much I thought it might slow down progress. Each day for weeks my neck would be sore, and ache all day. And because I'm always wearing it down my bangs, loose hair in the front and such would get in my face and annoying. Then I realized my I was being overly careful and just said fuck it. I touch and shake my hair all the time and my hair is progressing great. And no neck problems! As for sleeping i just pull my hair back out of my face. Once I'm asleep it doesnt even matter..
updated by @MoorZ: 07/23/15 07:57:25AM