It helps to make sure the dog comes all the way in and allows some close contact and praise at the end .. it will also go into a sit facing you later down the line 👍

I think the main thing is not allowing the children to throw anything for the puppy as developing retrieve is quite a fragile thing a lot of the time if you stick to that you might be relatively okay

I think it comes from a more traditional training route where dogs would be living in kennels and they wouldn't start training them till six or eight months old but they also wouldn't be doing anything else so not corrupted by everyday life. But the average Joe on the street it wouldn't be sensible to wait till six months to start lead work with a spaniel as it would be very impractical or feasible