if you are a minor and not baptized, tell your parents you don't want go to meetings anymore. They will not like it but you can counter whatever they say with a Awake from July 2009 about nobody should be forced into a religion titled
Is It Wrong to Change Your Religion?
"Should family conflict be avoided at all costs? The Bible teaches that children should be obedient to parents and that wives should be in subjection to their husbands. (Ephesians 5:22; 6:1) However, it instructs those who love God to “obey God as ruler rather than men.” (Acts 5:29) Thus, at times, loyalty to God may result in your making a decision that is unpopular with some family members.
Although the Bible makes a clear distinction between true and false teachings, God allows each person the freedom to choose how he or she will respond. (Deuteronomy 30:19, 20) No one should be forced to worship in a way that he finds unacceptable or be made to choose between his beliefs and his family. Does study of the Bible lead to family breakup? No. In fact, the Bible encourages a husband and wife who practice different religions to remain together as a family.—1 Corinthians 7:12, 13."
If they make you still go to meetings tell everyone in the congregation including elders, that you do not want to follow men aka the governing body. your parents will stop forcing you to go. If you are baptized it can be a little tricky
when I was younger I was raised by my grandmother. she had 11 kids with my mother being the oldest and the youngest was one year younger than me. growing up a lot of us kids (ants and uncles included) showed no interest in watchtower and grandma still loved us. I ended up playing football in and wrestling in high school. My grandmother never pressured us to get baptized because she did not want to shun any of us. She would pressure us into a family book study though and always offered us to go to meetings.
If you let your parents know that you do not believe they will never pressure you into getting baptized. They might want to study with you more though