Recently merged 2 EA accounts and I can't link my Steam account until next year.

Hey there, unfortunately, once you unlink a platform account from your EA Account and link it to a new one, you can’t unlink it again for six months. You can find further information here. Here in the EA Forums, all we can do is provide you with information; we're unable to make any account changes. If you need to get any further assistance making changes to your EA account, please feel free to reach out to EA Help.