Hey Rekih,
Tapering down was a very old method before medical science really got involved in treating alcoholism and withdrawal. It was met with mixed results, as it was completely done by non-professionals who didn't know how to measure things like dosage. So basically there's no one here who really could or should tell you it's the best thing to do.
I was just telling someone a moment ago that if you can't get to a doctor right away and you're worried about stopping abruptly, then at least go as easy as you can until you can get to the quickest doctor appointment.