Green Card for Aged out Children - EB3 to F2B?

Hello Anil,
I filed for AOS this month under EB3 (EB2 to EB3 downgrade done last year) and hoping my PD (2nd Nov 2010) gets current under EB3 by Sep 2021, I may get my GC by mid 2022. Currently my son is 23 (Aged out in Dec 2018) and on F1 status.
Once I get my GC, will I be able to file for my son’s GC under F2B and be able to use my PD for him using automatic conversion rule?
Excerpts from below link

(h) Rules for determining whether certain aliens are children

(1) In general

For purposes of subsections (a)(2)(A) and (d), a determination of whether an alien satisfies the age requirement in the matter preceding subparagraph (A) of section 1101(b)(1) of this title shall be made using-

(A) the age of the alien on the date on which an immigrant visa number becomes available for such alien (or, in the case of subsection (d), the date on which an immigrant visa number became available for the alien’s parent), but only if the alien has sought to acquire the status of an alien lawfully admitted for permanent residence within one year of such availability; reduced by

(B) the number of days in the period during which the applicable petition described in paragraph (2) was pending.

(2) Petitions described

The petition described in this paragraph is-

(A) with respect to a relationship described in subsection (a)(2)(A), a petition filed under section 1154 of this title for classification of an alien child under subsection (a)(2)(A); or

(B) with respect to an alien child who is a derivative beneficiary under subsection (d), a petition filed under section 1154 of this title for classification of the alien’s parent under subsection (a), (b), or ©.

(3) Retention of priority date

If the age of an alien is determined under paragraph (1) to be 21 years of age or older for the purposes of subsections (a)(2)(A) and (d), the alien’s petition shall automatically be converted to the appropriate category and the alien shall retain the original priority date issued upon receipt of the original petition.

Thanks,
Kalpesh.

I don’t think EB category can be changed to F2B. I will have to check as this is a new situation.

Thanks! Let me know if you find out the facts.