Which finger for 5th fret followed by 2nd fret same string.

Learning 'Happy Birthday' from this pdf, http://www.mikebonnice.com/sheet_music/lau_kanaka_ukulele/Happy Birthday.pdf

For the 6th measure the notes are 5th fret 1st string, 2nd fret 1st string, and 3rd fret 2nd string. Which finger is recommended/standard for each of those notes?

For the rest I am using Index for 1st fret, Middle for 2nd fret, and Ring for 3rd fret.

Thanks

pinky for fifth fret. your not trapped in 1 small box on the fretboard. dont be afraid to experiment and stretch those fingers if needed.

Pinky seems most natural.

Thank You