If you're unmarried then she can petition for you as soon as she gets her green card.

F2B category (unmarried children of LPRs over 21) is backlogged 6 years. F1 (unmarried children of USCs over 21) is backlogged 7 years and you'd have to wait for 5 years before she can naturalize.

After she naturalizes you'll be "upgraded" from F2B to F1 but you can also decline the upgrade should it put you behind meaning that you'll send a letter to NVC stating that you'd rather remain in F2B rather than F1.


Also, if you have an employer willing to petition for you, all categories are not backlogged except for persons born in Mainland China (i.e. not Macau or Hong Kong) and India. You can always have your employer do an EB-3 and use your LPR mother for purposes of I-601A.

Also finally, if you're from a country that can play in the DV Lottery you can also try playing in that and if you're drawn a winner you can also do I-601A and use your mother as a qualifying relative...