To my old psychiatrist, this may be something he would have allowed. In fact, I had a few psychiatrists who modified dosing a bit because of certain side effects, like oversedation. But I don't know your doctor's views. It's best to discuss these things with him/her. Sometimes you can discuss in advance "Ifs" and options.

I have taken Zyprexa in the past, but only briefly. I forget its half life and other attributes. I can say that I've had meds that clearly worked better when taking twice or three times daily over once or twice. I have had many occasions where a small"er" dose in the morning and a larg"er" at night was beneficial.

I'd be a lying hypocrite if I wrote that I've never self modified my meds. I even did a bit with pregabalin, recently. I'm unsure how my new psychiatrist will feel. He seems stricter than my previous one. Disapproval or even anger can result.