I'm not sure what's causing Mario to trip an extra time. It seems to be related to encountering the Cleft while Mario gets up, but it's still not consistent. Probably unrelated, but I was never able to do it without Sushie as my partner.
I have a license to use Nintendo’s content in this video through the Nintendo Creators Program. This video is not sponsored or endorsed by Nintendo, but any advertising revenue from this video will be shared with Nintendo.