^Wow, that's crazy. Yeah, I think your doc started you way too high, since I transfered smoothly from about 100mg OC/ day (at least 80mg, sometimes 120...) to 3mg bupe insuffulated (equal to me to like 6mg sublingually).
I would try to taper a little quicker, since you're still at the beginning, but I wouldn't be surprised if your body is used to it by now. I'd just experiment a bit and see, since you obviously have a ton to play with. No matter what, though, I'd try to go down to a reasonable number in as near of the future as is possible.
It sounds to me like the doc took the packaging a little too literally... and the pharm company wins if they get you addicted for a really long time, so it appears you have to look out for yourself, unfortunately. Once you have taken the step to get off and seen a doctor, you shouldn't have any more bullshit to put up with!