Hi and welcome!
Getting your house under control?? HMM i'm still working on mine lol. I agree with everything klmno said as well. Good points made all around.
Bipolar diagnosis is a hard one to swallow. You sound very comfortable in the diagnosis, almost as though you are in acceptance mode. Which is wonderful. I was in denial for a while. I think as parents we know our kids are different somehow yet when we start getting those diagnosis's it can really be a bit of a awakening for some of us, I know it was for me. There are days I still say wow I cannot believe.
I know for me what has worked with my little BiPolar (BP) girl is; routine, scheduling a bit rigid yet they seem to thrive in lives of predictability and routine. So getting together some sort of schedule posted somewhere is a good idea.
I'd also say from experience not engaging is huge! My daughter, difficult child is very head strong, very set in her ways, can get angered easily and triggered often. I try to achieve things with her now and it can be everyday things i'll request ie. hw, chores, personal hygiene, etc. with 3 prompts to do it, if by third she doens't comply than followed by a quick consequence. This is usually where it gets ugly. She will become verbally rough with me yet I dont' respond i let it go.
I know our kids have mental illness, yet there has to be lines in the sand i think regarding what behaviors we are willing to accept and which ones we aren't willing to. My daughter has it, yet she's also still young, her rages are minimal and mostly verbal attacks whereas i know alot of other parents go through some really rough stuff at home. I find that when I engage it escalates the situation to an out of control level than all parental power is lost at that point.
Like klmno said someone working with him whether it be a therapist or phdoc they have to learn coping skills to deal with everything that comes with the illness. I'Tourette's Syndrome not easy I know.
I'm sorry i have soo rambled. Welcome again and there are alot of great ppl here, which i'm sure will follow.
You are soo not alone.