Not sure really, I did it in a very unhealthy way which was pretty much being too depressed to bother taking it until I was physically too sick not to, which was usually after about 3-4 days, then got to the point I was taking an unmeasured sip every two to three days, trying to consciously keep it as small as possible. I looked into tapering properly when I first got on methadone and I was led to believe the best way to taper off is using a % based approach, it will be much faster at first. i.