Titan
Just stating the obvious, this is not a one off check, there will be at least one more (maybe more) before you ever start training if successful and then one per year until 60.
If you struggle with the 29 (thought it was 30?) BMI limit due your body shape/muscle building...whatever....this will be ongoing.
Interestingly the Koreans do not have a hard BMI limit anymore (there's a story there) but it remains a non-negotiable aspect from the Japanese for now.
Cheers, good luck.