You should follow your doctor's instructions, and do not advance your diet. Your stomach must heal, and if you're digesting food, it's not healing properly. I was on full liquids for 2 weeks, then 1 week of pureed foods, 1 week of soft foods, and then I was allowed to slowly introduce solid foods. I was told that if you advance your diet too quickly, you risk not tolerating a lot of food later down the road. It was hard not to eat, and I couldn't wait for some cottage cheese in the pureed stage. There is a list of suggested foods on this site if it helps.
Take it easy, you'll get through this healing period and be on your way!