not trying to be a dick, I'm a junky and have been for a while now, but tramadol and codeine aint shit man. be lucky you're having the withdrawals you're having. the only problem is tramadol w/d which is extremely similar to SSRI withdrawal, and from personal experience that can be really fucking bad. codeine withdrawal? Most junkies are using codeine for withdrawal, not withdrawing from it. The shit that you're addicted to is what most people taper off on, so you have no weak opioids to taper off with. for w/d, get some loperamide-Imodium-helps with the shits a lot.
I would say taper off on methadone, but you'd probably end up overdosing/getting high as fuck/getting addicted to m'done, which is a much worse habit than codeine or tramadol. M'done ain't shit to fuck around with when you don't have a big habit. I used to think I had a big habit when I was using 15 mg of methadone a day; now 15 mg wouldn't come CLOSE to even getting me out of withdrawal. get some benzos (but dont use 'em for too long) and Imodium, god bless man opiate withdrawal is hell even if it's codeine and tramadol