Forgotten password and fake birthday entered

Bit of a problem here, I have an iPhone that is locked to a icloud account. The problem is I forgot my password for this account and I'd like to answer the security questions in other to gain back access to the account. Only thing is, I entered a fake birthday on sign up, as I am not a fan of putting my information over the internet if not fully necessary. What steps can I take to get access to the security questions so I can answer them and gain back access to my account ?

Thank you