Can't Gain Weight

Our daughter was diagnosed with failure to thrive a little over three months ago. She went from 50% to 3% to 0% in a matter of 3-4 months. She went through periods of having an aversion to food, to eating and still not gaining. We have seen a gastroentronologist, hematologist, endrocrinologist, and an cardiologist. All we know is that she has a moderate size hole in her heart (ASD). It will require surgery but because of her poor weight gain they are pushing it off. Two weeks ago she was 17lbs and 2oz; we had taken a two week break, because it was a mental strain and needed the break. (we go for weekly weight checks) Today she weighed in at 17lbs 4 oz. She is eating an average of 900-1100 calories a day in pediasure alone. She eats throughout the day as well. Her pattern is breakfast, snack, lunch, snack, and dinner. Her pediasure is offered at every meal and she happily drinks it. Everyone is scratching their heads and is at a complete loss. We don't know where to go from here. We plan on getting all second opinions as well. Any ideas is more than welcomed! Thank You!

[CHELLETO6DOGS]

Just wonder who put your daughter on pedisure,  when my son failed to thrive they put him on corn oil and caro syurp (I think those two) they kept increasing the amount of each in his bottle as he was loosing more and more, he was 8 pounds at birth and at 3 1/2 month was at 11 pounds thanks to his tube feeding. maybe this would help.
sounds like she is starting to gain as long as she doesn't loose she will be okay
good luck to you guys and I hope she continues to gain.

[Heathmcmi]

Her gastro had put her on pediasure because she was strictly breastfed and would not take anything else but that. It also did great because of the high calorie count.

[Athena_M]

How old is your daughter?  My son has difficulty putting on weight he has hypotonia.  

[Heathmcmi]

My daughter is just a little over 1 year. How old is your son?