Ravel fingering question

[thorn]

I'm working on the piano part for one of Ravel's songs, Asie, and I can't think of any fingerings for the first page that aren't super awkward (attached, the section before the first rehearsal mark). Perhaps there are none, or perhaps I'm just tired/rushing (it's not an easy piece and I have a time limit).

More specifically:
bars 2-3 aren't that bad, just weird playing melody with only the thumb, but bar 4 the C#-A melody is hard without pausing the trill...
bars 5-6 the top melody is doing my head in, seems the whole thing needs to be fingers 4 and 5 but at that speed it's really hard to achieve fluency.

I suspect it's just a sh*tty part that I'll have to muddle through vs there's a solution I haven't thought of, but thought I'd ask. Thank you for any thoughts!

[lelle]

Bars 5-6 will have to be 4-5, yes. Or cheat and you can use 3 a bit too.

Bar 4. I'd do the melody 16ths (C# A) with the left hand, or the very first C# could be still be taken with the right hand thumb if you want. Either pause the left hand trill, or do it triplet-ish with the melody notes a bit accented C#-a-c#-A-#c-a (capital letters are the accents). Played fast the trill will just be a vibration anyway so it doesn't have to be mathematically perfect all the way through. You just need a thought out solution and practice it so you can do it.

2-3 I'd experiment with playing the trill with 3-5 if comfortable and you could potentially unlock the use of the 2nd finger for the melody too.

[thorn]

I've tried all of this now and the biggest help was not thinking of the trill mathematically- both in b3 RH and b4 LH (taking the melody with LH). I tried parts of the trill as 3-5 but 2-5 feels more controlled (to me anyway).

And sticking to 4 and 5 with bars 5-6. It's just one of those bars that needs extra practice.