Dear Tei,
Not too worry. The earlier this is detected, you stand a better chance to have the eyesight corrected when she grow elder. Do you confirm this is Astigmatism ? My girl used to see TV with squinted eyes and therefore we suspect. If you are not too comfortable with your current doctor, get another opinion, a pediatric ophthalmologist, if possible. They know how to deal with a baby.
My girl started to wear her glasses around 2 years old. I wish I have done that earlier.