I think what you want is to assign your shoulder buttons to the "tilt" functionality in the WiiMote configuration screen. Assigned them to "Left" and "Right". That's what I used to do before I got a good BT adapter that allowed me to use my WiiMotes.
Windows 10 Pro x64 | i7-9700K @ 4.6-5.0GHz | MSI Z370 Gaming Plus | MSI RX 5700 8GB Factory-OC | 16 GB DDR4-3000
