This observation isn't age specific. Last night I was feeding a group of young snakes when I looked over to the other enclosure to see Honda watching the young ones eat.
I opened her enclosure and she made short work at getting over to this side. Once on this side she sat and let me hand feed her. These were little chunks cut for small snakes and Honda was carefully taking them from me as not to bite me.
This group I was feeding was my radix/parietalis mix. A few of the radixes didn't want to venture into the food dish, so they let me hand feed them.