This point has been fully confirmed by the Red Copper Dragon Maiden, Aivensa.
Her last Growth Dragon Sleep was spent within the Dragon Oak Dream Realm, which not only didn't hinder her growth but, thanks to the help of the Dragon Oak Mother Tree, significantly enhanced the quality of her Dragon Sleep and drastically shortened its duration.
Next time, if Aivensa enters Growth Dragon Sleep again.
Gaven is considering letting her construct her own Dragon Sleep Dream Realm.
Don't forget.
The Gnolls' unique dependency on Giant Dragons can form a unique Dragon Dog Mutual Aid.
Gaven has reason to believe that the Giant Dragons' Dream Realms offer an unimaginable allure to the Gnolls, while the threshold for the Gnolls is greatly reduced compared to other dream realms.
Gnolls indeed have no way to aid True Dragons in bloodline purification like they do with Bipedal Dragons.
