Can you consider a different solvent such as dioxane or diglyme? You may be able to dissolve your compound in.

Alternatively catalytic hydrogenation to reduce the nitrile groups could work depending on the rest of your molecule

Maybe it would be helpful to hydratize the nitriles to primary amides prior to reduction? Hydrogen peroxide provides a simple way to to so.

Article Synthesis and Characterisation of α-Glycosyloxyamides Derive...

Thank u . i will try