Digital Nomads

I have a kiwi passport and a UK one. Obviously because of brexit I can't stay more than 180 days in a year... however could I do 90 days in one schengen country on my uk passport, fly to another schengen country, get stamped, on my nz one and then do that kind of on a loop in order to stay in Europe for 360 days out of a year and then just do 5 days outside of Europe or in the uk for example?