David,

Yikes about that much weight.
Someone who has used Zyprexa will show up in a half day or so and give you a more informed response.
I think it helps to avoid carbs and embrace veggies and protein . . . .
. . . . . it is really hard not to gain weight on Zyprexa.
My guess (and I have no experience) is that you could come down in the dose of Olanazaine at this point. Your situation is different from what it was ten months ago.

M