Unlink old EA account from steam (DONT REMEMBER EMAIL)

Hi! I have an old EA account where I do not remember the email to it, it is linked to my steam account and I can't access it to unlink it, I only have PC. The old account is J_plays_11_Maybe, I only use it to play battlefront and you can see on this account (which i want linked to steam) I have the same exact friends as the old one. All I need is for you to unlink steam from my old account J_plays_11_Maybe and hopefully save progress and transfer it to my current account ItsNotorious_J, even the steam username and current account name is basically just my steam username but it was taken by someone else so I added its and a underscore! If I need to provide any extra details to verify please let me know!