Hi , I have applied for J1 2 years residency based on no objection letter. Dos has sent favorable recommendation to Vermont USCIS center(VSC) on May,8, 2015 but I haven't received anything of this center. Yesterday I had interview about green card and the officer said I can file I-612 form but this form is not for no objection process. Please give me advice, I just have 87 days to submit proof. Thank you very much.