Stay where your at put the cult out of your mind , daydream when at meetings and concentrate on your schooling. People have had to drag themselves out of much worse situations then yours. Just hang in there and use it as your motivation for a better life. When you graduate and get your life established then move on and enjoy your life. Fade away from the cult but don’t bad mouth it or your parents , so you can have some kind of normalcy with them when your older.
Parents tend to grow to respect their kids more when there grown and out on their own. Then maybe then if they ask you can bring up a few points to why your no longer a practicing JW.