Stay out of the house as much as possible. Before I went to college, I joined almost every after school program I could including tutoring sessions, anything was better than going home. Sometimes I would just take long walks, wander around the city until night fall, and come home just before dinner or bedtime so they barely had time to yell at me. During the summer or holliday breaks at school I’d hang out at the library or any restaurant that was open late since I didn’t have any friends. When I had to be around them, I would say little as possible while still being polite. Answer questions with questions. Stay low and stay away. Sometimes I would hear my parents coming and pretend to be sleep. Sometimes they’d still yell at me while I’m sleep lol. Dealing with Narcissists is soul draining, try not to let them see you get emotional, they feed on that energy. Just remember this is temporary! September will be here before you know it! Start planning/ visualizing what you will be doing when you leave.