Dubs has been bad, very bad over this stretch of games. It's about time he takes a break for a while, and then he can be the primary goalie again in the playoffs.
For the duration of the season, I would switch Kuemps with Dubs, and give him some rest until the playoff stretch.
The problem with that is that Kuemper is awful, and the Wild would really like that top seed.
If you give Dubnyk days off, you are conceding that top spot.