Facial fat?

Hi!

I'm currently 20yo. My weight is 45kg and height is 160cm. So basically I'm underweight. I can be considered as skinny as i have thigh gap and flat chested.

The problem is my face is quite chubby.. like i have puffy cheeks. Even if i try to gain weight, like the first thing that will happen is that my face gets more chubby while my other areas remain the same..

So what should i do to not get chubby cheeks?!?!?!