H4 to Student Visa with AOS pending

USA H4
#1

Hi

My son in h4 and our priority date is oct 2014 EB3. We have filed for AOS and AP and EAD for all 3 of us (me, my wife and and my son)
Question: If none of us use i-485 EAD, will my son be eligible for h4 ->student visa transfer if our priority date is not current by Sept 2025 (he will turn 21 Year) or can we lock his age based on filling date.

#2

You cannot lock the child’s age based on filing action chart.

Your son should be able to file F1 visa.