welcome to the board, confused (((((hugs))))
There isn't much you can do at the moment, you're too young to go out on your own, so I would just echo the other folks' comments and say that no matter what you do, don't get baptized! As long as you don't do that you can 'drift away' slowly over time. I know you probably want to stand up and shout to everyone you know that the "Truth" isn't true. But you have to bide your time for now. It's hard, it stinks. But hang in there...get good grades, think about finding ways to go to college in a few years. And just keep loving your mom all you can, and then hopefully by the time you can exit the religion, maybe she will be ready to see the light herself.
hugs,
essie