This boy often sleeps like this on mom in some position or another. I think he likes the feel and warmth and Sage will stay real still allowing him to sleep.
The videos will be found here. I am late getting them up as I have not been able to get to them yet.
The pups weights I will get up at one week but they range from 8-2/8oz 237g to 10oz 284g. They are gaining nicely. They eat, they sleep and mom cause she is carrying so much milk does go in to feed them often to gain relief. The back milk stations without antibiotics is doing well. We stopped them as Sage was getting an upset tummy and it was already clearing up. We caught it early. It happens a great deal when moms have enough milk to feed 10 and she only has 4. Over the days, her milk will reduce to the needs of the pups.
Sage is a happy gal but needs more sleep. Pups move from one place to the next. I do notice they really appreciate soft.