Condescending

My son is smart, but he is condescending and controlling. He lacks social awareness, often playing really mean pranks on people. For example, we are late to the airport, and he locks everyone out of the car, today he restarts the washer and dryer lots of times so his cousin can’t complete the wash and dry cycle needed for his trip. He feels a need to correct my husband and I every time we give a correction, and correct his sister in everything she does. He talks to people like they are beneath him, which is never the way we speak in our family. He will offer a correction even when he is wrong. He was enforcing a rule to not lock doors with his older cousin and the rule of no devices without an adult present, when that is just a rule for us . He will often point out other people’s mistakes even his dads, saying just now you were not using a calm voice or body… If I give a simple direction , he will correct me For example:” I’ll say please go hang the coat on the coat rack, and he will say, actually mom that is more of a snow suit.” Or I will offer a correction and because he is listening to these videos sometimes, he will correct the way I correct him. He is constantly yelling at his sister, and saying that she is doing something wrong, when she actually isn’t. His little sister is really good at the 4 major skills, even better than me, and masterfully disagrees, but he will correct it. We have had regular family meetings, and these meetings he consistently brings up things he finds irritating in his dad. He gets into these mental flex wars with people, and belittles them for their knowledge. He is suppose to be in second grade and doing 5th-7th grade work, and he makes his friends feel bad for that. He will constantly mention facts to his friends, quiz them on math problems that they don’t know, and gets into these knowledge competition with everyone. He usually completes his school work independently of me, and hardly struggles, but if he ever struggles, it will be a power struggle for me to teach him, and he feels shame and will start belittling himself if he needs me to teach him, which is insane because I’m his teacher as a homeschool mom. What do I do? We have gone through so many friends, people don’t want to school with us because their kids feel bad. How do I teach my son to not be controlling and condescending to others. Imagine the show young Sheldon, and that is my son. He is seriously clueless when it comes to social cues.