I know it is hard and I feel u
However what doc says is true
It’s a growing up phase
When my boy was that age he was really fussy too
All he wanted was just plain rice and soup and nothing else
I gave him Pediasure as a supplement and I also tried diff ways and diff variety of food.
She also feels ur stress and anxiety and that also affects.
Try that? Is there anything else ur girl likes?
I also experimented with homemade burgers, pasta, ( finely chopped and minced broccoli, cauliflower, carrots, spinach and included that - hidden from sight of course into the burger patty, pasta etc)