Fun game, short speedrun, had to try it out. 1-1 through 1-3 was pretty nice, 1-4 was a bit messy, very solid 1-5.

1:3x is possible, and there is a fast cycle that you can do in 1-3, jumping on both the Dodo platform and the one after you pick up the top left donut. The right half will have to be played quickly (without the balloon hitting you), but that is a potential time save that I can think of.

Would be fun to see people try that!

YouTube: