To request a deferral, you will need to contact the admissions office of the medical school you have been accepted to. They will provide you with the necessary forms and instructions for requesting a deferral, and they will review your request to determine whether or not it is approved.
If you are approved for a deferral, it is important to stay in contact with the medical school and to keep them updated on your progress during the time you are deferred. You may be required to provide periodic updates or to meet with the admissions committee at some point during the deferral period.
Once the deferral period ends, you will be expected to matriculate into medical school. If you do not matriculate by the agreed-upon date, you may forfeit your acceptance.