Asian + Pacific Islander is such a stupid fucking category. There is no way Japanese people, Pakistanis, and Samoans have remotely related biological factors for gestational diabetes. Or any other meaningful thing the government might care about that would justify grouping people together.
Based on my own experiences your suggestion is worthless, as one diet doesn't fit everyone and it seems that no one understands (besides calories in/calories used) how humans should eat to stay healthy.
So suggestions like this are worth the same as suggestions about how to raise your children.