abilify is a surprisingly strong drug. 2mgs can have a profound impact on the way the brain works. so...please try a gradual reduction. pill cutters are available at many pharmacies.
on the plus side, abilify has a long half life, although other drugs on board will affect blood concentration, clearance rates, etc. so...anyway...because it has a long half life, doing a gradual taper will help reduce the impact on your brain and the rest of your body, too.