Rotate Wiimote motion controls from vertical to horizontal?

[marioxb]

On Switch, the Game Boy Color game, Kirby Tilt N Tumble is emulated to use Joycon or Pro Controller motion controls to play the game. The original cartridge was controlled by tilting the GB to play. What I want to do is play the game with a Wiimote sideways, NES style and use it's motion controls to play the game. I've got the buttons remapped on the Titan One the way I like, but I can't figure out how to change the accelerometer so it thinks I'm holding the Wiimote vertically, while actually holding it sideways. I thought I'd would be as simple as this:

Wii accelerometer X --> Switch accelerometer Y
Wii accelerometer Y --> Switch accelerometer X
Wii accelerometer Z --> Switch accelerometer Z

but all that ends up happening is up and down are mapped properly, but not left and right. Does someone know what to do?