Dear friend, welcome to HCM!
A trivial mitral regurgitation
is not a significant disease and does not affect day to day activity.
And there is no treatment for it.
You can not do anything to correct it on your own.
You can just let them re-examine you and see if it meets the fitness criteria set by them.
An appointed specialist on their panel would examine it.
Take care and please keep me informed of your progress.
I hope to have answered your query satisfactorily.