@babyblues262, I can imagine the tight rope that you are constantly walking or, as you say, walking on egg shells. It's hard to distinguish what is "normal" 16-year-old behavior that could benefit from parental guardrails and what behaviors require nuanced understanding of the bi-polar diagnosis and possible triggers. His past suicidal intention is likely always on your mind. None-the-less, there are things that are not okay and boundaries that need to be respected. Am I getting the scene sort of right?

While not bi-polar specific, I found the practical examples and tips in this book really helpful when my daughter was a teen.
- Parenting a Teen Who Has Intense Emotions: DBT Skills to Help Your Teen Navigate Emotional and Behavioral Challenges by Pat Harvey and Britt H. Rathbone https://www.newharbinger.com/9781626251885/parenting-a-teen-who-has-intense-emotions/

I also found it helpful to talk to a therapist for ME to give me tools to communicate better with my teen and to choose different listening and word choices that didn't set her off. I wasn't able to join a parents' group, but would've liked to do that. Do you have any supports for you, either one-on-one or in a group?