₦airaland Forum

Hi. My mum applied for my US green card as a permanent resident in 2008 and it was approved. My priority date is Sept 2008. She has applied for citizenship a month ago. If granted, my F2B will be converted to F1 which means I need to wait for about a year more for my priority date to become current. I understand from people that the conversion to F1 can be revoked if requested.
Right now, I'm in Canada as a student and so, I will like to have my interview here. Please how should I go about that?
Again, please, what steps should I take to revoke the conversion to F1 if it eventually take place?
Should it be before or after the conversion?
Where should the revocation letter be mailed to? Should the letter be written by the petitioner or me?
Since my mum has retired, can my brother or sister who is a US citizen act as a co-sponsor?
Thanks