If you are already inactive and sporadic in meeting attendance (IOW, they already view you as "weak") it could take a while for any of them to figure out you have gone AWOL.
Only time will tell if the fade was "too fast" in the sense of spooking the elders into harrassing you. Just have an excuse ready for when or if anyone enquires after you.
I wouldn't worry though, most JWs are put off quite easily.