how much Abilify is your son on??? maybe the doctor can increase a little. only saying this, as i went through this with my son, he's 14. he's been on Abilify for a little over a year, and about 2 months ago, he was also put on Lamictal.
Good luck to you and your son
my son is on 30mg at nite of Abilify along with 50mg of lamictal...and too....200mg Lamictal in the morning
and yes, he's 14, but he's also 6'3" and about 174lbs...