I think you sould talk to them first. Sometimes people react when they’re about to lose something. Like that ”don’t know what you got ’til it’s gone”. Maybe they can react and notice that you’re right.
If they don’t realise, I think is good for you to leave. Is obviously scary, but you have to prove yourself that you can. Is a sacrifice you must face to get your happiness.

I would try to talk to your family and see if you can work things out @tigerrajah, if not, maybe moving out will benefit you and help you become more independent, try to focus on all the good things that will happen, I’m sure you will be OK, I’m always here if you need to chat or vent, message me anytime, my inbox is always open, stay strong, you are never alone (hugs)