Hi Jdash, welcome!
DesirousofChange gave you G-R-E-A-T advice.
I was baptized when I was 12-all my family was in. Parents were divorced and Dad was DFd for smoking, sister DFd for fornication, Mom was DFd for fornication. Mom was reinstated. She's still in...40+ years later!!
I faded when I started college. Community college. I used the excuse of not going out in Field Service (FS) that I had homework. What was more important? My getting good grades or a few less hours in FS? My Mom decided that my getting good grades was critical to lifelong success.
I also worked because I was paying for my college. I had student loans and I thought I had to pay them immediately...D'oh! Anyway, it also provided cover for a good fade. Work, homework and I had meetings and FS covered.
Think hard about college or Vo-Tech. Whatever you do, get an education. They can't take that away from you.
Never send a letter and never meet with them to tell them what you are doing. They will want to bully you, guilt you and frighten you into staying. What kind of "loving" organization does that? None, they are a cult by definition. Scientologists are just as bad. Ask Lea Remini.
My Mom and family still talk to me because my response to JW questions is "Mmmm" or "huh" or a grunt. I never agree or disagree. I find an excuse to get off the phone. Learn to bite your tongue and you'll have a relationship with the family....if you want one.
Good luck!