cute idea, i'd make the sizes have a bigger difference because it was hard to notice at first
the different properties of sizes were more like a "gotcha" moment rather than teaching me the mechanics and uses of being which size, which is funny if intentional, but confusing if not
i also saw no purpose to being anything other than the smallest size, i know this was a short jam and with more time you could develop more levels and uses for each size, but as it is now, i just kept myself at the smallest
nice work and good luck !