what happens to jehovahs witness if they walk away from their religion?

[Kayla M]

what would happen if a teenage baptized jehovahs witness were to decide they did not want to live as a jehovahs witness anymore and converted to living as a normal church going christian? keep in mind, this jehovahs witness's dad is a normal christian and his mom is a jehovahs witness. his mom seems to put a lot of pressure on him about everything making him feel like there is only one way to live and is way too strict with him