hello and welcome,
there is nothing to worry to extract tooth if your blood sugar level is controlled after medication.
it is better to remove all teeth in one time,as it is less strainful for both you and your dentist
otherwise you have to tolerate the pain of anesthesia
and extracion several times.
don't be panic while extracting,as it can lead you into hypotension
and thereby fainting
please inform your dentist regarding your medical history prior to dental treatment.