I think you've changed your mind (for now) but getting baptised to get others off your back or for any other reason is the dumbest move you can make with very long term consequences.
In this cult you are never good enough, they want more more more. Baptism is just the start and a very consequential one at that, then it's pioneering, bethel, more more more. The pressure never stops.
Dont do this for any reason. if your parents are so small minded and abusive that they view this a problem and resort to threats or actions to make you change your mind then they dont love you, they dont care for you they just want to control you and have you validate their fucked up world view. They are not worthy of your love.