My son in year 7 wants to do a music GCSE. He is a keen guitarist (self taught). He’s been told to take the GCSE he would need to be a grade 3 by the end of year 9. How doable would it be to get to this level in 2 years? He has taught himself to read guitar tab and learns to play by a mixture of learning by ear and YouTube tutorials. He can’t read music yet though and doesn’t know much music theory.