Is there an enharmonic equivalent for this jump?

[Happy girl]

Jumping from E flat to C sharp & then back to B flat on the bass side in this piece ‘Rustle of Spring’ is quite a feat. I have tried to find enharmonic equivalents to ease the burden but have not been entirely successful.
Any help would be appreciated.

Many thanks.

 

[Happy girl]

Still trying to work it out, I have discovered that the enharmonic equivalent for C sharp7 is D flat7. If this is correct???? then I should be able to fathom a way to play this piece without the big jumps. Halleluiah!

 

[Glenn]

If you are using a 120 bass then the C# (which is the same as Db) is two down from the Eb.
This is normally under the Ab which is often marked with a dimple or some such.
It's not such a jump unless I've misunderstood you.

 

[goldtopia]

Summer Nights from Grease is a bit like that. There are four key changes without any enharmonic adjustment. You go straight into another key without any adjustment except for one place which is only one note which is really just an indicator. I used to be in male voice choirs which is more common for enharmonic key changes in which you listen carfully to the piano. You can imagine 60 plus voices all suddenly going off key.

 

[BobM]

Has anybody noticed bars 10 and 11, a typo?

 

[JIM D.]

Not really the 11th measure is 3 bass notes and 1 Eb major chord.