Is the voice volume of Mickey & Minnie mouse adjustable? If so, how?

When using the feature of the Mickey and Minnie Mouse watchfaces on the Apple Series 3 watch to speak the time aloud, it is blaringly loud! I have tried adjusting the volume with the digital crown while the voice is playing, adjusting the alert volume and haptics in general, repairing the watch with the phone, making sure the Watch app on my iPhone, and the iPhone itself, and the Watch all have the most updated software (they do) -- everything I can think of. While those adjustments do seem to be generally effective for other sounds the watch may make, they seem to have no effect whatsoever on the volume of those Mickey and Minnie mouse voices. Can anyone from Apple tell me if those voices are even adjustable at all? Thanks!