They may be the youngest of the 3 crew but they are increasing in skill as the days go. When you merge 2 or 3 litters together, it always benefits the youngest as they attempt to perfect their skills to keep up. I find you can't easily merge till late if the gap is more than a week.
Do check the changes we have in store for all 3 litters on the Cinnamon blog.
The pups are eating well. They are the most loving crew.
Be sure to check out the videos. I have a pen to take down and well - changes.