The red dragons have a BSA to help incubate an egg, causing it to gain 1 day towards hatching.   How about adding a new BSA that does a similar thing for hatchlings. There are several dragon species described as being very caring parents, which would make excellent candidates for this BSA.   Lore wise I think its not unreasonable to assume a certain species of dragons taking time to help raise small dragons by bringing more food and teaching them to fly and stuff.