I think he announced his Olympic ambitions back in 2016 when he retired. Supposedly he retired to focus on the Olympics. Plus he had a really though pro run.
They refused to let him fight as an amateur until recently, when the whole JBF leadership got ousted due to various allegations. New guy now leads them and welcome the Lighting Kid with open arms
I didnt know you could do that, when i think about it i dont see any reasons why somebody couldnt or shouldnt but ive never heard of it done before.