You cannot credit your REAP eligibility for your GI Bill Post-9/11 eligibility as you do not meet the requirements sorry
What do I do if I want to change my benefits?
If you want to change benefits, call 888-GI - BILL-1 888 - 442 - 4551, Monday through Friday, 8:00 a.m. at 7:00 p.m. we will gladly help you