If you're doing fine (and let's acknowledge that whole 'insight' thing and hope others also agree you're doing fine), then there isn't really a need to tell the doctor right away is there? It's not like him saying "you shouldn't go off medication without approval from me even though this time I do agree" is going to change things.

Unless something happens in the meantime and you need a sooner appointment, then don't worry about it. When you see him just mention that you stopped taking the Abilify and why and that you're doing well without it and feel no need at this point in time to add an antipsychotic.

Doctors may have a lot of knowledge about how drugs work and for whom, but it is important to listen to yourself and your body as an authority on how that drug is working for you. If you're doctor can't accept that, then it may be time to find a new doctor. The last thing you want to do is end up over medicated taking antipsychotics, mood stabilizers, antidepressants, seditives, stimulants etc. when all you may really need is the right mood stabilizer.