Angfea, glad you posted in here! Hope you get some more replies from more knowlegeable vegetarians...Weezle, are you a veggie?
I would check the tofu to see what is added into it. If it is just baked tofu (nothing added), then don't worry about the sugars. If there is something like "evaporated cane juice", then don't get it. You can always bake your own. Or compare it to regular (unbaked) tofu and see if the sugars are the same. If so, there probably aren't any added ingredients and it's safe to have.
BTW, just in case I didn't post it before, your loss so far is great, so please don't feel like you need to hurry it up...you are doing very well! Lots of people only lost 4 pounds in the two weeks of Phase 1.