A few days (3 to 4) is certainly okay, but the sooner the better. Obviously you can’t do this, but I’ll try to do my vacuum packing and freezing the next day. No good comes from it sitting in the fridge.
An alternative is to put it in Ziplock bags and freeze it. Then when you get the vacuum bags you open the ziplock or remove the Ziplock bag, stick it in a vacuum bag, vacuum seal, and back in freezer still frozen.