Good job, Charlie! 105mg to 5mg in a fairly short time is a big accomplishment! If you can avoid going on bupre with memantine to help, then that would be amazing. But definitely go for the bupe if you feel in danger of relapsing on dope. Sucks to be addicted to anything, bupe included, but at least bupe is safe and makes you feel normal and keeps you out of the ups and down and daily struggle of being addicted to other opioids.
Personally kratom always makes me start to take it 24/7... I can't keep it to a once in a while thing. Even though it's really not that great. I guess the same can be said of any opioid though... for me it's all or nothing, it seems.
I'm working on reducing my bupe dose down to 2mg this year. Although without even thinking about it, I took my full 6mg this morning. I think I am going to start by taking 4mg twice a day, that should be an easy drop. Then I'll do 3mg twice a day, then 2mg twice a day. Then maybe 2mg once a day, or else 1mg twice a day, but the problem with that is, under 2mg, and it doesn't saturate the receptors anymore so I might withdraw at that level. So 2mg once per day might be easier.
Then once I have been on that for a while (the bupe doctor wants me to be on bupe for 2 years before I try to get off - so I might try to stick with 2mg per day for the rest of the year, but we'll see), I will work on trying to get below 2mg. I want to try t taper down to an extremely low dose, like 0.05mg/day, before jumping off entirely. At that point I will certainly use memantine to help me, and my hope is that at such a low dose, memantine can just totally block any discomfort.