My 2 week pre-op consisted of the following:
Protein shake for Breakfast (low sugar, low carb)
Spinach or romaine lettuce salad with red & green peppers, mushroom and 4oz protein - choices -- boneless skinless chicken breast, or tuna or one egg for lunch.
Steamed veggies - peppers, zucchini,mushroom + 4 oz protein for dinner.
I would occasionally substitute a Protein Shake instead for dinner.
Snacks - raw veggies, no fat yogurt or no fat cottage cheese.
The first 3 days were the toughest but I stuck with it. Just take it one day & one meal at a time.
I had surgery last week, all went well and I'm back to work today. Aside from shrinking the liver, I've found the pre-op diet was good prep for the post-op Fluid stages.
Good luck!