Sorry but that would just be really selfish of Gepetto, even Jiminy would have persuaded him that it’s not a good idea. They only have one chance to make the wardrobe, there’s no test run as far as we know.
This has always been my biggest issue with the theory of Pinocchio being sent through the wardrobe ahead of Emma. Why would Geppetto chance the saving of the entire world just to send Pinocchio ahead through the wardrobe? That is so selfish. And just wrong, in my opinion.