hi and welcome! I can see how very low carbing as a low fibre vegetarian will have its own set of difficulties! And a lot of that will depend on how low fibre and how low carb... are chia seeds too fibre-y for you? Only chia seed puddings are great, if made low carb. how about tofu scrambles or yoghurt for breakfast? Or avocado and mozzarella? Golden milk? Coffee with cream or coconut oil? My best breakfasts don’t happen at all. By that I mean that if I skip breakfast completely (just a hot drink with a smidge of cream in it), my blood glucose stays beautifully steady until I do eat - which was 3pm yesterday.