I'm not an expert but i would say the amount she is eating is fine. My Lo is just over 9 months and has porride (2 tbsp) or 3/4 of a weetabix, 1/2 slice of toast or small yoghurt for breakfast. Lunch would be meat and veg 3-4 tbsp and 1-2 tbsp fruit. Then dinner is usually pasta 3-4 tbsp, i do dinner early at 16:30 so its not so close to BT.
But apart from dinner they are eating almost the same amount, she only started taking more than 2-3 tbsp at lunch and dinner a few weeks ago, when your DD is ready she will start taking more. Some babies just east more than others the same as some adults do its nothing to worry about. Just offer as much as she will take she'll let you know when she is full or ready to take more.