It may make a difference if you tell them that you will go somewhere local, and keep going to meetings with them.
My son stayed at home, went to meetings, so we had to endure the occasional comments and experiences at assemblies, where future nuclear physicists related how happy they were to be janitors serving Jehovah.
When he graduated, everyone was surprised at how quickly he had finished school. He got a great job, and was considered a prize catch for the lucky sister that snagged him.
He's a ministerial servant now, highly regarded in his congregation, though I hope that the cognizant dissonance will begin to kick in eventually. We used to have many family discussions about the flood and how long man has been in existence, so I know he has many doubts.