I'm navigating this with my partners right now.
I've decided to go barrier-free with my two partners, and use condoms with everyone else.
We are a pretty incestuous polycule and mostly use barriers with those outside the friend group, and we're all tested frequently. ~3 months.
Me and one of my partners also take daily doses of PrEP, which nearly eliminates the risk of contracting hiv. I'm also fully vaccinated, so the only thing I could potentially get that can't be eliminated with drugs is herpes, but that is very treatable.
Tru