Just to shortly sum up my situation, so that you can compare: I was on 150 mg of oxycodone each day plus different dosages of fentanyl and a mix of different benzodiazepines.
Before I started on Suboxone I gradually lowered my oxycodone dosage by removing 20 mg each day. 130 - 110 - 90 - 70 - 50 - 30 - 10 and the following day I started on 16 mg of Suboxone. The relatively fast lowering of dosage resulted in some withdrawal symptoms also when I started at the 16 mg of Suboxone. But relatively fast I stabilized on this amount without feeling withdrawal symptoms. From there I lowered my dosage by 2 mg until I got to 10 mg of suboxone. To make the 24 hours in the beginning and took 8 mg in the morning and 8 mg in the evening around 6 o'clock. Dosing two times was really nice for me. Before I did that I felt bad during nighttime.
From here I can't really tell you more about suboxone as I switched to methadone. Suboxone wasn't helping with the psychological "need" for opiates I felt. Methadone did. I am in no way saying you should switch - just to make that clear. Suboxone is in many ways safer and better than methadone when it comes to treating addiction in my opinion. It just didn't work for me and I would have relapsed if I didn't change.
My point is, that you should be aware of the signals you body and mind are giving you. Find the dosage where you feel good. But maybe try the method of dosing two times each day to see if that will help you as well and result in a need for a lower dosage than if you take everything at once. Do not rush the gradual dosage lowering, it was my experience that too fast a reduction increased my need to opiates thus increasing the risk for relapse. You should be careful with reducing the dosage if you doesn't feel prepared about it. Do not force yourself, but attempt to make a schedule where your write down when you should lower your dosage all the way to 0 mg. Follow that as long as you feel comfortable. I have attempted this before where I just wanted the tapering to go as fast as possible, and that resulted in relapses for me. So in my case, time was essential. I would rather by on a substitution in a long time than tapering very fast and increasing the risk of relapse exponentially.
Regarding the benzodiazepines. My favorites before I started treatment was clonazepam and etizolam. I switched to diazepam and started on 15 mg each day in one dosage. After a couple on month I reduced the dosage from 15 mg to 10 mg. After month from 10 mg to 7,5 mg and again after a month from 7,5 mg to 5 mg. I could feel anything withdrawal wise doing it like this. And to be honest I think I could have easily skipped the 7,5 mg and gone directly to 5 mg. Since then I have stay on 5 mg for maybe half a year. When i feel comfortable I think I will lower the dosage to 2,5 mg and stay there for a long time as well before reducing the dosage to zero. I chose diazepam due to it long half-life which will result in a much more stable dosage all the time and avoid big increases and big decreases which a shorter acting benzo will result in. Stability is everything for my mood, as soon as I use stuff that interfere with this stability, my mood reacts negatively. But is seems like you have already found the benzo that works for you. So do not make any changes unless it becomes necessary. I tried several benzo's before I landed on diazepam and stayed here. I you feel increases in anxiety or something and feel the need to redose several times a day you should consider changing. For me clonazepam was too "euphoric" right when I took it to make it work. I felt the need to redose way to often. Euphoric is exactly the right word, but it's the closest I can come to a description. I think I felt euphoric due to a huge decrease in anxiety right when I took it.
This is my story and the advices here are based on my experience. Nothing more. Be aware of this when you read the post and make your own sense of it. I wish you good luck with your journey. It seems like you are doing really well. This is nice to hear. Wellbeing is important in this process.