2 1/2 year old with no appetite

Queen

My daughter literally never eats for me.. she’ll take 5-8 bites of food then won’t touch the rest at all. And she’ll go all day without eating. I don’t know what to do to make her eat. Her pediatrician says she’s not growing like she should be so he’s sending us to a specialist. Makes me feel like I’m doing something wrong and that I’m a shitty mom