Trying to get more calories in.

We are struggling to get more calories in Bree. I kept a count of the calories she ate today and it was only 1080. They say for her size, for her to maintain that weight she needs to eat somewhere around 1488 and for her to gain the weight she needs to she needs to be eating 2000. I just don't know how we are going to do it, because I was proud of her for what she ate today. Granted, it wasn't much but she ate breakfast, lunch, and dinner and a snack of yogurt this afternoon. I'm going to have to get her to drink more Ensure or something, all she drank today was water which has zero calories. I hope the doctor can offer some solutions on Friday. Maybe once we rule out any underlying medical conditions.
She is really anxious and upset about everything so is not sleeping well, having more memory problems. She had 5 seizures over night but only 2 during the day today. We just keep telling her everything will be okay and she will get through this.