Ok. Then I assume you are out of status at this point and you will need the provisional waiver. Luckily, for a change, I not only have good news for you, but two pieces of good news for you. Most importantly looking at the Visa Bulletin for April, a visa became available to you April 1st. This means you are covered even without the CSPA because you were still under 21 on April 1st. Second, they just expanded the provisional I-601A waiver to allow U.S. Lawful Permanent Resident parents to apply for minors. So first, have your father file an I-601A immediately. Here are a couple of links:
Also contact the National Visa Center (NVC) referencing your case number ***** explain to them that you were under 21 when a visa became available to you in F2A category under Mexico on April 1, 2016:
So follow the NVC process, but don't schedule the interview until you get the I-601A pre-approval.
Now, if you filed a I-485 before your I-94 expired and after April 1, 2016, then you are correct in ignoring the NVC and just follow the Adjustment process. You may even have been able to file the I-485 before April 1, 2016.
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