no some people air dry for up to a couple weeks... it depends on your climate and stuff too.
even if the exterior layer of bud gets a bit dry, it doesnst really matter because once you put it in the jars, the moisture will even out.
If its still too dry after you cure, you can add a fresh leaf or orange peel in there just to add a bit of moisture.
good luck =)

edit: btw airdrying for 3 days isnt nearly enough in my opinion - I always airdry for at least 6-7 days.