9 wk baby shape?

My LO prefers her left side to sleep I got her the flat head preventing pillow but it hasn’t help her head seems to be one side good but the other one where she doesn’t like sleep on that side is not good. What can u do to fix if?? She has her appt next week, does anyone know if I request a helmet for her head shaping will I get it or when would they give her one? She’s my first & I feel horrible I’m trying my best I purchased that pillow which didn’t help her. I make her sleep on that side but she keeps on turning it’s an endless battle with her & I mean I understand she’s comfortable. Any advice or anything please?? I’m posting anonymous because I’m ashamed & feel terrible. Please no bad comments since I already feel bad!!😞😔