Lactaid makes up for a specific enzyme deficiency (lactase) that can vary in severity over time. It’s not likely that your non-lactose sugars issues are from a similar problem that’s so easy to remedy. Perhaps Gas-X would help, though not everyone finds it helpful. Do complex carbohydrates, like starches, cause the same problem for you? Those digest down to sugars pretty quickly in the gut. Some J-pouchers do better on a very low carbohydrate diet, though that didn’t seem to do much for me when I tried it.