Accutane just takes a while to work, regardless of what you eat. It seems like clearing is usually around month 3, but reallyyyy varies on the person.

I worried whether it was anything to do with my eating too. But it turned out that I was just being neurotic. I tried eating fattier foods to help absorb the accutane cus absolutely nothing happened for me until month 4. And then suddenly all my acne went away, just keep eating whatever you want it doesn't matter