You can try to compensate the yellowing only within small limits…

Try to reduce development time or temperature a bit, you propably have to expose the paper a pitch more.
Still haven’t done that, but some benzoetriazole in the CD could be worth a try. I would start with about 100mg/Liter.
If not handy, a small amount of sulphite(0.2g till0.5g) or NaCL in an similar amount could be used to reduce color coupling. But whatever you do, the contrast will suffer…
Try with smaller fractions of your developer first, if restrained to much it will become useless other while…

Regards Stefan