Residency question for PR renewal

[bricksonly]

My family moved to states, bought a house, spouse worked fulltime and kids took local public school. That's our primary residency for sure. We applied for non-resident for tax purpose and got approved.
I am a self-employee and main work is not in US or Canada, thus a lot of time spending outside home. In this case, as most of my time spent outside is more than I stay with my family, how should I give my address outside? Can I just simply put those as business trip without an address? It's could be several months, and in extreme case, as for Corvid, lasts almost two years because of travel ban...

Thanks for advice