I need to change the gender of my son...his male...

If your inquiry is related to changing the data of the birth certificate, here is the following information:
If an error occurred during the registration of the birth certificate data and you want to correct this error, by wishing to
Changing the gender of the newborn registered in the birth certificate from female to male.
In that case, you must go to the Preventive Medicine Center (the headquarters of the Preventive Medicine Center that issued the original birth certificate for the first time), after which you must submit a request to amend the birth certificate data.
  Then the original documents will be checked and a birth certificate will be issued.
You can obtain more information by reviewing the official website of the Health Authority by clicking on the following link:
the official website of the Health Authority