As to the sugar, I find myself using stevia a lot now. You have to experiment with it; with some foods, you really notice the taste, and it doesn't work very well as a sweetener. But in greek yoghurt, for instance, stevia tastes really nice and not at all unlike sugar.
That brings me to a second point; as a vegetarian, one of my best investments was a simple reusable yoghurt strainer. Natural yoghurt has a lot of carbs in the form of lactose, but straining it into greek-style yoghurt removes these sugars, leaving protein and fat (which you can control by choosing no/low/full fat yoghurt). Add some stevia to it, and you've got a healty breakfast, snack, and/or dessert without any carbs.
I think it should also be said that relying solely on soya protein is not the best idea. It's a complete protein, yes, but there's very little we understand about nutrition--one of the few things we do know is that variety is better. That being said, the firmer the tofu, the fewer carbs--plus it's easier to cook (fries up nicer). If you get sick of tofu, paneer is a good alternative, and easy to make as well.
Finally, chia seeds can be a useful addition. They don't have a taste (but they absorb an incredible amount of liquid, so you can soak them overnight to make pudding), but are packed with fat, protein, and fibre (approx. 32% fat / 16% protein / 35% fibre / 7% net carb by weight).
That brings me to a second point; as a vegetarian, one of my best investments was a simple reusable yoghurt strainer. Natural yoghurt has a lot of carbs in the form of lactose, but straining it into greek-style yoghurt removes these sugars, leaving protein and fat (which you can control by choosing no/low/full fat yoghurt). Add some stevia to it, and you've got a healty breakfast, snack, and/or dessert without any carbs.
I think it should also be said that relying solely on soya protein is not the best idea. It's a complete protein, yes, but there's very little we understand about nutrition--one of the few things we do know is that variety is better. That being said, the firmer the tofu, the fewer carbs--plus it's easier to cook (fries up nicer). If you get sick of tofu, paneer is a good alternative, and easy to make as well.
Finally, chia seeds can be a useful addition. They don't have a taste (but they absorb an incredible amount of liquid, so you can soak them overnight to make pudding), but are packed with fat, protein, and fibre (approx. 32% fat / 16% protein / 35% fibre / 7% net carb by weight).