Why doesnt my 1.5year old daughter eat?

She'll be 2 in September.. And as chunky and healthy as she is, she doesnt eat much.. She just wants milk. I make her pancakes and eggs in the morning shell take 2 small bites and be done.. for a snack she had a couple bites of an apple. and I made her sweet potato fries and hot dogs for dinner and i had to force feed her, she didnt seem to dislike the taste but she didnt want to eat. So day after day she has about 5 small bites of food. Is this normal? Will she be malnourished? Any suggestions?