Fructose diet is very difficult but you can manage the diet. No sugar at all including no gum, no honey no soda etc. Just look at the labels for any form of sugars if you cannot pronounce the ingredients on the package then don’t buy it because it most likely have some hidden sugars.
Also no fruits and fruit juices.
You can also goggle and y-tube for more information or you can go to a nutritionist and hopefully your insurance will pay for the Nutritionist. I have fructose so bad that I cannot eat onions, garlic, peas and carrots. I had to experiment with different foods. My tip off with Foods was to keep a daily log of everything you eat and see how you react. I would get the diarrhea the next day that was how I was able to tell what I can and cannot eat.