I'm trying to get the United Mileage Plus Visa from Chase... for 30k miles. I applied the week I got my BA Visa from Chase in the mail, and was denied

They sent me a letter saying I had too recent of an application.
I do want the UM+ card... how long should I wait before reapplying? I know you guys can't give legal advice... but what would you suggest/do?
Thanks@!