Clearing protocole for Lightsheet microscopy

Hello,
We have in the plateform a Z1 from Zeiss and I’m worried about Ethyl Cinnamate because RI will be 1.56
My microscope is set to work with 1.33 or 1.45. I already try the CUBIC 2 with success +/- RI 1.48
Do you have some advice to reduce RI with Ethyl Cinnamate?