This is exactly why JWs are regarded as a cult. All you have done is say you no longer want to be one. You need to find out how members of the family would regard you if you did diassossiate yourself. Try showing the following quote from the Awake July 2009 page 29
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.
You have found it unacceptable to worship the JW way. Therefore you should be allowed the freedom to live your life as you see fit Good luck.