I don't drink soda at all. It's wasted calories and will make gas in your gut no matter how long it's been since fundo. If you must have it,
open it and let it sit overnight. It will have enough gas remaining to give your tongue a little tingle.
There are lots of useful juices, preferably the ones that aren't labeled "drinks," that you can adjust your taste to. Since we have lost part of our stomach, and maybe some of its digestive process, we need to pay attention to nutrition.
I still can't eat any gassy vegetables after a year either. It's tough to get enough vitamin K though. There's a significant amount in salad, not enough in daily vitamin. I bruise easily and have had problems with anemia.