Function getting executed too many times

implementing goat horn enchantments, the way i'm doing it is:
Blow Goat horn
 v
goat horn dummy advancement
 v
execute function
 v 
revoke advancement
 v
check enchantment of goat horn
 v
if true : do stuff
I think it keeps getting triggered & revoked. Thus executing  3-4 times. Usually not an issue, but sometimes it really screws with stuff.
i.e. spawning 3 wind charges instead of 1
Any way to avoid multiple identical entities from beeing spawned? or preferably avoid the function from getting executed repeatedly?