Can someone addicted to meth recover and become sober? Worried father

My son has been meth Addiction. My son was always nice and honor student when he was child. I found out he was taking meth 8 years ago ( maybe more before) He is 30's now. He has been homeless. He sometimes in jail too. He was sent a nice rehab. He relapsed as soon as he got out rehab. We are told we can't help him unless he decides to quit. Several months ago he told me he decided to quit. I called off my job and helped him a lot. But he relapsed again. Then he has been homeless again. We don't know where he is now.
Do someone know some person who recovered and sobor from severe meth addiction ? If you know, could you please share your story for me ? I am very sad and suffered this situation.