
I think it very much depends on breeds and th individual bitch.
With a first time Mum in my breed that weighs just 20kg and pups are pretty sturdy I am quite happy to ease of the supervising when their eyes are open.
In fact if Mum is obviously careful then after the first week with a maiden dn 4 days or so with experienced Mu being within earshot (baby monitor or close by) is quite enough.
I know that in some breeds the bitches are so clumsy and or heavy that some breeders don't even let the pups stay with Mum but bring them to her for feeding and have them in a box by the bitch (no way would my girls put up with that).
By three weeks mine are in a puppy pen with the adult's coming and going into them if they wish and Mum happy to allow it, certainly by this age I can go shopping, etc.
From then on it's an endless round of changing bedding, poop scooping, feeding, then letting outside bringing inside, getting cleaned and dried, let out again, cleaning their quarters, disinfecting and on it goes from 6am to Midnight. etc.