Normally puppies pen there eyes in a week so I think you might want to get him checked out at a vet.
I have a puppy who is 3 weeks old that hasn't opened his eyes yet, is something wrong?
Yes, our Pekingese pups opened their eyes after 2-3 weeks, so if in a few days nothing has changed it can be considered abnormal. If it gets to over a month, then get it seen by a vet asap as there could be a condition that is damaging the eyesight if not corrected.
By a month they should really be walking around a little bit and eating soft food.