Earbud fit

Hi. I just purchased these earbuds and I do like them. However, I have small ears, but apparently really small ears for these buds. I am using size 1 in both ears currently, but for the left ear, that size 1 is too big, causing pain to that ear. Is there a chance there are any smaller buds? or does anyone have other solutions? My last pair of earbuds (different manufacturer) were the same style as these so I didn’t think there might be a problem if I used the smallest set. Leaving it partway out doesn’t really work because it can fall out and the audio is also reduced. Thanks so much!