Burping and gas sucks, but it comes with the territory. Keep hydrated, remember that is rule #1 for week 1. Drinking warm liquid helped me. Also if prescribed prilosec, prevacid, or nexium make sure to take them. My gas pains were worse than the surgery pains so I understand where you're coming from. Burping is mostly annoying for me.
I feel you on the sweets. I despise artificially sweetened things, and it feels like that's all I've had for a month. I am just now going into mushies, oh its so much better, it at least brings SOME variety. Chicken broth, beef broth, ham broth will all break up the monotony with being both heated items and savory, but offer little nutritious value. But remember they count as fluid intake.