May is bone dry for the Switch as far as significant releases go, next up is Yokai Watch 4 and Mario Maker 2 in June. So it's possible it could lose its lead for a week or two in that time. Nintendo still have a problem with backloading their yearly release schedule. 

Bet with Liquidlaser: I say PS5 and Xbox Series X will sell more than 56 million combined by the end of 2023.