Velvet Euro Mount|Skulls, Skeletons and European Mounts|Forum|Taxidermy Talk

I was brought a skull to mount about 2 days ago I have never done a euro mount in velvet before. I tried doing a injection but it does seems to be flowing under the velvet like it should. My question is its it to late to cure the velvet an leave it on there or should I still be able to cure it. It wasnt froze when I got the deer has been around 4 days since it was shot