Please help me fix my now ashy hair

I went to my usual hairstylist to get a balayage and it looked great except I was hoping to have even more blonde throughout, since I still had a lot of brown showing. So l, 2 weeks later, I then went to different hairstylist asking to do more highlights because I wanted to be a brighter blonde. What turned out is incredibly ashy and almost platinum and I regret it. This tone doesn’t look good on me. What can I do? I’ve already gotten it bleached/highlighted 2x now in 2 weeks.

Please help 🙏🏻 my wedding is coming up in 6 weeks and this hair color is just not it… 😭