i'm not a breeder but it sounds like a good idea on one hand but
on the other hand maybe not. don't worry you and your pup
will bond. if you didn't see the pup untill the day you pick
your pup up the bond is going to be there. the bond has already
started with you.
It would be up to your breeder and his/her schedule. Most breeders have full time jobs, families, the same house work and yard work and everything else as other people, plus dogs and puppies to care for so time can be tight at times.
But visitors are also great socialization for the pups, and most can make time to accomodate a visit. The majority of our customers live too far away to visit regularly, but for those who are close enough we always make time for them to visit every week or two. Helps us get to know them better and as I said it's important socialization for the pups.
I visited the day my pup was born, at 2 weeks, 4 weeks, 5 weeks and when I went to pick him up he came right to me and sat down next me like he knew I was there for him. We have an amazing bond to this day! I say visit as much as you want! ??
My breeder friends ask people to come over to visit when the puppies turn 4 weeks old for socialization reasons. If the breeder has time, why not. It's not like you are making a day out of it. If it's just for an hour, see if the breeder doesn't mind.