I eat normally for me (some meat, lots of veggies, no processed food), and luckily I have home cooked meals everyday thanks to my wonderful wife. I try to eat healthy, and moderately on the sweets. NO alcohol. I take the pills with some food in the morning (a dollop of yogurt, banana, etc), and then with dinner. Be consistent. And always drink plenty of water throughout the day.
I think it is different for each person, so just try to be as healthy as you can. I am in my 14th week with no side effects to speak of.
Don't be scared. You can do it - 12 weeks ain't so bad, and a 98% success rate for your genotype!
Good luck and let us know how you progress,