I'm also tapering off abilify using the water suspension method. Here is a video of @zlatinb preparing small doses of abilify for tapering: https://youtu.be/FJpGO4VrsWA.
Make sure to stir the water really well before drawing out your dose or water to waste, and remember to check how well tablets from different brands suspend. Some suspend much better than others, while some sink immediately depending on the brand.