I soak my beans for 3 days in water, changing the water 3 times a day. Sugars which are hard to digest are removed during soaking, During the hot months of summer I add a little ice to the soak water during the day and refrigerate the pot of soaking beans overnight.
In addition I take the Walmart generic brand for Beano, it does not have mannitol in it which is an artificial sweetener that can cause digestive upset. I think Target also has a mannitol free form of Beano.
Another way to make beans more digestible is to sprout them. You can find on-line sources for how to do this. I tried garbanzo beans and it worked quite well, lentils are also suppose to be easy.