That's interesting about the specific allergy! It goes to show how unique all of our bodies are.
If you're worried about strawberries and their natural sugar, just go for a walk around the house once or twice. That will burn off the calories and start building muscle mass which will become a powerhouse for you. I always find when I face one of those dilemmas that it's far better to enjoy the healthy treat, do a little fun exercise, and you end up way better off all around!
I don't tend to eat tofu myself, but maybe someone else can help? I think it's in my miso soup so maybe that's an idea?